If you spot a person drunk, alone, lost and without any battery on their phone, the decent (read: normal) thing to do would be to offer them help.
But when one actress pretended to be intoxicated in Madrid as part of a social experiment, the reaction of the men she came across was creepy and dangerous.
And what's more, it was in broad daylight.
Instead of offering to help the woman find her friends or give her water to drink, some of the men tried to ply her with more alcohol, while one pinned her up against a wall and tried to kiss her.
The video was uploaded to YouTube by a rehab clinic with the title (loosely translated): "Drunk girl in the city. Dangers of alcohol."
But shouldn't it read: "Drunk girl in the city. Dangers of men"?
What's more shocking is that in the comments below the video, many people have taken to blaming the woman rather than the men involved.
"This is a clear indication that victim blaming attitudes are still unfortunately prevalent in our society", says Collective Shout campaigner Caitlyn Roper.
"Commenters accused the woman of 'behaving like a slut' or 'acting flirty'," she tells HuffPost UK Lifestyle. "Even if the woman was flirting with the men, flirting is not an invitation to prey on a woman, to use alcohol to compromise her consent and try to lead her away to a hotel room as she verbally protests."
At the end of the video, the director says: "If what you saw just happened in the middle of downtown during daylight any day of the week surrounded by onlookers, then what happens on a Thursday or Friday when a teenager gets drunk?
"Or once a woman loses her self-control due to an intoxication in the big city? Is she going to tell us what really happened?"
Roper says: "I was confused by the director's final comment - is he suggesting women who have been drinking are unreliable, or that they are untruthful?"
She adds: "We live in a society where women and girls are taught early on that they must modify their behaviour and restrict their freedoms in order to avoid being targeted by men.
"There are no laws against drinking alcohol, but there are laws against sexually assaulting and raping women.
"Nobody suggests men who drink, or drink to excess, are inviting an assault, but unfortunately there are still widely held beliefs that women are responsible for crimes of violence against them, that women can be complicit in assaults against them based on a number of factors - their dress, their behaviour, alcohol consumption."
She says that society needs to turn its attention to "potential perpetrators" instead.
"We need to change the culture, a culture that teaches men to objectify women, to view them as sexual conquests and that they are entitled to women's bodies. These beliefs are reinforced in the media and wider culture, particularly in mainstream pornography that is shaping and moulding men and boy's attitudes towards women."