Stickers are personalization of respective peoples beliefs/accomplishments/or downright things they like.
my car has a few...
when they fade, I take them off and replace. Captain America, Pretty Sweet, and the "Smiley Face" Neff sticker have been replaced with an Army Armor Sticker, a Girl Skateboard Sticker, OEF Vet and a Pennzoil Sticker.
Regardless, I have a Amsoil sticker and an American Flag one on the my Rangers back window, as well as a Gumby sticker.
Stickers done right, not trashy, and kept up with can be tasteful.
My Skateboard helmet has a few. OEF/"Afghanistan I served", IAVA (look it up if you don't know), Spy Optics, and a Redbull one.
I've skateboarded for awhile. Actually never knew as a kid and picked it up in the Army.
Funny going on leave and being the only clean shaven professional haircut guy at a skatepark.
I've skateboarded in public. Little kids come up to me. Being a 6 foot tall guy with tattoos and a skateboard parents tend to be rude to you when their kids talk to you.
Shoot, just being in public and a kid looks at you and smiles or says "hi" and you say "Hi" back they see your tattoos and freak out and say "don't talk to him, hes a bad man"
I just smile, and carry on.
I did one time have a lady tell me I was a sinner and a loser and a "scumdog of the universe" when I parked at a local store. she was putting groceries in her car with her 2 little ones, and saw my stickers and tattoos and her kids said "hi"
then I went in my trunk to grab my dress uniform to take to the cleaners next door to the grocery store. Her attitude changed quick and ended up thanking me.
Moral of the story: If the person whom owns whatever/ has whatever, don't judge them, you don't know them, what does it matter to you?