From Texas Standard:
Big beards, sleeves of tattoos and dark sunglasses; those are bold fashion statements, to say the least.
You might see a person that fits that description and think their appearance screams "I'm tough, I'm bad, I'm not to be messed with and I don't care what you think."
Maybe that's not a fair assessment. Some of the them do care what you think of them, and they know what you're thinking about them, too.