Yep.
Leftist pukes are prone to graffiti and destruction of property should they be "offended" by something somewhere.
I can testify to that; I can testify to nearly a whole lifetime of observation to that.
Most of my life, I've lived in Nebraska, some parts deep red, some parts just red, some parts almost pink.
And I've also lived in blue areas of Pennsylvania and New Jersey.
Even now, despite the contempt and loathing for Barack Milhous around here, if one's a moonbat, one can still drive around freely and unmolested with one, or several, of those bumper-stickers.
I've never in my life known of a case where a Democrat, liberal, or primitive bumper-sticker or sign was messed with, by a Republican or a conservative.
On the other side of the coin, the habit seems ubiquitous in majority-blue areas, Democrats, liberals, and primitives doing damage to property bearing a bumper-sticker or sign they don't like.