Naw, a bunch of stickers of bands, states visited, funny shit, or 4wd trails is cool. (Like ok maybe they have ADHD like me or something). A bunch of political bumper stickers is someone who probably needs to ignore the news for a while.
But custom applied lettering forming unhinged screeds is, more likely than not, a condemnation of the government's failure to provide readily accessible treatment for mental illness.