They are attracting (national) attention (even if it is by "wounding" their own side) and implicitly encouraging everyone to "join in on the fun" and quite possibly "up the ante" (i.e., launch more-violent attacks).
Regards,
Yeah, it fascinated media back when the Occupy movement got started. This is fighting the last war. A side of me hopes there will be copycats because at least this isn’t killing anyone, and...
Rioters help Trump because he opposes them.
Angry drivers will not appreciate it. I remember 9-11 when firefighters held up traffic to get donations in their boots. Made me late for work. I did not complain of course. An epic time of national unity.
Too bad it took 9-11 to unite the USA and even then the left went sour grapes in a hurry.