Strutz Strutz:
Doesn't paint contain nasty stuff that is bad and requires other nasty stuff to remove it?
No, most modern paints don't even contain things that are flammable. They clean up with water, or alcohol. Unless they come in a rattle can, or are used on treated lumber.
Paints of yesteryear were very bad to inhale or ingest, but a smart protester won't use those because that could lead to other charges.