I think when they picket their houses they should be met by some armed Americans who ain't going to take it anymore. Threats against children are obscene. Perhaps these folks are also child molesters and pediphiles?
This is suburban Maryland. One of the "guns are evil" nexus in the US.
No way of knowing for sure.
Nobody within our local governments seems to even care to find out whether they are in this country legally.
If we knew their immigrant status then we could check their background for criminal records. But around here (in Takoma Park and Montgomery County, MD), everybody wants to give 'em great big hugs, free education, free meals, rent assistance... they don't care if they may be criminals.
http://www.familywatchdog.us/
Bookmark it for future reference, if you haven't already.
This is Takoma Park. All you'd probably get are old farts in ponytails going "Peace, man, can you dig it?"