You seem to be under the ignorant impression that you have to fire a certain number of shots before ear damage occurs. Ear damage occurs with sounds above 85 dB. An unsuppressed AR-15 is 165-175 dB. Even a single shot can result in permanent ear damage and tinnitus. If you are close enough, it can deafen you. A suppressor can reduce that to around 130 dB. Still enough to damage your ears, but perhaps enough to save you from hearing loss.

Also, I didn't say I was worried about their ears. That's another thing you're mistaken about. More than just nazis have guns. Many leftists do as well. I myself have a AR-15 chambered in .300 Blackout, as well as an AR-15 in 5.56, among other weapons.

Shooting unprotected is very damaging to your ears and very painful even if it's just one or two shots

A single gunshot in an indoor space can cause permanent hearing damage, not just to the shooter, but to everyone around them. Especially infants and young children.

Fuck ICE, but the suppressor is not the problem here. It's literally the only part of that image that isn't a problem.