A good TV cop would be able to figure out who manufactured the signs by finding companies in the area who produce them, and then running metal tests against their stock, or pressuring them to divulge their client. Personally, I like the Raymon Redington approach, and just torture them.
This is pretty close to one of Denver’s larger intersections, a cross between two major east - west and north - south routes. It’s had cycling groups of migrants for 6ish months but as far as I can tell it hasn’t been a static group. They mainly offer to wash windshields for cash but otherwise are no burden whatsoever on the neighborhood. The surrounding neighborhood is pretty wealthy as it’s close to Denver’s museums and largest parks. This sign is literally in front of a sprouts farmers market.
It’s unfortunate that we’re not doing more to get them more stable housing and employment but they in no way are causing problems. The only people upset about it are just upset about such a visceral confrontation of the inequality when they drive through these intersections. I’ve seen dudes in $100k Audis yelling at the dude just trying to get some money for food because he’s been legally barred from working for his first six months of being here.
Denver has a decent mutual aid network that is doing a lot to help, if you’re interested check out https://www.denvermutualaid.com/
There's a great science fiction series by Steve Perry called "The Matador Series" where the weapon of choice is a dartgun that mounts to the back of your hand. The barrel comes out above your index finger and you shoot it by pointing your finger and tapping the underside of the barrel.
There are a bunch of different kinds of darts, stingers that just hurt, shocktox which incapacitates and Smasm... which makes every muscle in the body involuntarily contract and ties the victim in a knot for 6 months.