BUT, if someone who looks very suspicious based on their appearance and behaviour (mannerisms, language, choices of clothes, tattoos, etc) it's normal and dare I say _healthy_ for residential (family type) neighborhoods to be suspicious of them.
If they also happen to be black, they might want to use the race card "OMG You suspect me because I'm black? Racist! How dare You!" etc, but who cares.
I am honestly surprised by the down votes my comment received.
If you let criminals into your neighbourhood because you're scared of being called a racist, something is wrong with you.
I'd say this might be an interesting moment for self-examination. If their primary reaction is outrage then they're probably not a criminal after all. Maybe think again at why you suspected this innocent person of acting shady. Maybe learn from it so you don't make the mistake again.
"who cares" isn't really a very community-minded reaction when you've just accused one of your neighbours of being a criminal.
Also let's keep in mind that this is the safest the world has ever been especially in America meaning statistically if you're assuming someone is up to no good based on their appearance or dress you are almost guaranteed to be wrong.
And, really, "dressing suspiciously" is often bullshit no matter who's involved. As a white kid I got hassled for wearing a trenchcoat, and that was just as stupid as anything else. Adding race into it only makes it worse.
And if you have an issue with (as the parent you agreed with) their language, clothing choices, tattoos, then frankly, you need to do something about it - and "encouraging people to keep a watch on them", calling the police for suspicious behavior (where "suspicious" is this vague hand-wavy synonym for "I don't like them") is not it.
And trying this emotional appeal to "well, my family's safety is more important than some rando's feelings" (your exact words) is BS caging your words. Maybe you should move then? Much as you'd like them to move, and are trying to make it uncomfortable for them to be around. Hint: you have no more right to be there than your neighbors do.
And lest you suggest that maybe I need to be exposed to more mental illness, violence, sociopathy or otherwise, like you say you have, to come to a 'better' understanding / enlightenment, well... I deal with all those things, all the time, working in EMS as well as IT.
Which folks? The ones who dress funny and have tattoos? We don't want you as neighbors either. The difference is that I don't call the cops when I don't like the way my neighbors dress.
But still, let's assume you can reliably see this things: sure! It's very reasonable to suspect someone who is acting shady. Because there is likely a reason why they are acting shady. Race doesn't work like that, and that's why it's different. A black person didn't wake up in the morning and decide to dress or act in some way that makes some people suspicious of them. They had no choice in the matter - just simply existing is enough to make you a suspect in some people's eyes.