I'll grant that the poster is lopsided and misogynist. Maybe it's also misandrist.
I think people are getting confused because they think the poster is saying "this is how you should treat women". It's actually more like "You should know that this is how police will treat you".
And, at worst, some people may see this, see how horribly lopsided it is, and decide it MUST be full of shit and do the opposite.
I wish I had enough confidence in humanity to disagree.