It's not really Muslims per se who make me nervous

What makes me uneasy is olive-skinned young men glaring at everybody else. Gangsta Rappers make me nervous. White supremacists and Neo-Nazis do too. There's a Far Side cartoon with:

a rattlesnake in the top left hand corner, a puffed-up puffer fish in
the top right hand corner, a mad cat in the bottom left hand corner,
and a man wearing a trench coat, with a boot on his head, a child's
pool floaty around his middle and carrying a bazooka. The caption reads:
"How Nature Says, "Don't Touch""

Here's a clue. It isn't racist if you've seen people who look like this in clips from their martyrdom videos, or sawing off the heads of captives, or rioting, destroying buildings and yelling "Death to America!".