So as we continue to go about our normal lives, in the face of this attack, whether you're celebrating Nowruz or marking the International Day for the Elimination of Racial Discrimination these values of tolerance and openness should stay at the forefront of our collective consciousness.
The grief felt by rank and file officers will be accompanied by a renewed realisation that the tragedy could provide a springboard for other zealots to create mayhem and that officers, now more thinly spread than ever, could be vulnerable especially outside the major cities. The death of a brave officer in the most heavily policed area of the UK will indeed be a cause for concern.
The City of London Corporation - one of the world's oldest local government bodies - which oversees the historic heart of London held elections to its Common Council last week. The Square Mile financial district delivered a surprise upset to the traditions and the politics of that ancient house.
The police officers who directed others away from danger, while moving towards it themselves. The ambulance crews and staff at nearby hospitals who fought to save lives and comfort the injured and traumatised. My colleague Tobias Elwood, who did his best to save a dying police officer. Such people epitomise public service. I said after last year's tram crash that we don't say thank you enough. So to all those who helped to keep my staff and I safe: thank you.
British, European and American politicians will have to manage groups who see the world in very different ways, protect their jobs and enable them to live their lives in a rapidly changing, digital economy where success means less barriers to travel and trade. Trump and Brexit won their elections on the back of declarations to protect those who see their future within a less open state, that they can recreate the world before globalisation and that international free trade has damaged their lives. It's a gamble which is unlikely pay off.
It seems to me that this is just the latest step in George's ongoing quest to become Prime Minister. The editorship of the Evening Standard may look like a powerful pulpit from which to hurl stones at Theresa May and build momentum for a bid for Downing Street. But it would be an immense disservice to the million people who read the paper. And in the end, the readers have to come first.
What would be the result of zero tariffs for our British lamp manufacturer? They would be able to import their components with ease, but their exports would hit the same costs as one faces now when trading overseas.
The Tories shambolic U-turn over national insurance contributions has proved that they cannot give Britain the change we need. By breaking a manifesto promise and then backtracking, they have now lost all credibility. You cannot trust a word the Tories say... The Tories' list of broken promises is long, and set to get longer under this failing government. Rather than tackling the challenges we face, all the Tories offer is empty rhetoric and meaningless promises. One can only imagine what the next dishonest pledge and subsequent U-turn will be. With a track record this flaky, who would believe a word they say in the future?
EU nationals make a huge contribution to our economy and our public services, but let us not ignore the number of EU nationals that see the UK as more than that: this is their home. We have a duty to them to ensure that they continue to feel welcome here and failure to provide a unilateral guarantee of their continued right to live and work here undermines that.
Following International Women's Day it is important we take pride in how far we have come but also to recognise that more needs to be done. Women's life experiences are not better or worse than men's, but they are different, and that needs to be represented in Parliament and across industry.
You will fulfil your ambitions of becoming an MP and be privileged to serve in government and sit around the Cabinet table. This is all a long way off, so for now make sure you focus on doing well at school and doing things you enjoy. Being competitive is good - aim high! Having setbacks is normal - you will make mistakes, but it's important to learn from them and know how to get back up again.
Plenty has been written about the 'left-behind' voters who have now created Brexit and Trump and are threatening to make a fascist President of France. But they have mostly been regarded - and possibly accurately - as something of a throwback, Luddites who provide little more than a general talking point and a useful demos for a small group of right-wing commentators with populist pretensions. There have been very few attempts to analyse the actual content of left-behindedness.
Poverty is sexist. Demanding governments break down the barriers that prevent girls going to school can end gender injustice, it can help prevent poverty, and it will strengthen global security. The fight against extreme poverty and for better security starts with getting an education for 130million girls.
I was happy to hear that the Conservatives had won the Copeland by-election. Mostly, because I am a Conservative supporter. But anyone who's read my incoherent warbling online will be aware that I subscribe to a particular string of conservatism that's left of many others. I'd probably go so far as to call myself a Libertarian Conservative - if that's possible.
Until the party are able to present to the electorate a coherent, attractive and gaffe-free plan, they are in serious danger of returning to the political wilderness. The current landscape is being shaped almost solely by an ascendant Conservative Party, leaving Nuttall with a lot of work to do if he is to stop his party from descending into irrelevance.
This week's Commons People sees the team wondering if Labour has gone too far with its campaigns on the NHS, after saying "babies will die" if the Tories win in Copeland. Theresa May is facing trouble from her backbenchers over business rates, and is also under scrutiny over what she knew about former Guantanamo Bay detainee who was awarded £1million compensation before becoming a suicide bomber in Iraq. There is the usual amazing quiz - no, seriously - and the crucial In Case You Missed It.