I hope this is a bad attempt at a joke, because I feel like it should be obvious.
But let’s imagine you’re one of those Arabic-looking people. Would you okay with being strip-searched every time you went through airport security if it was in the name of stopping terrorism, while people of other races went through relatively unmolested?
Okay. How about, you, an Arabic-looking person, get pulled aside at the airport, EVERY time you travel. Your whole family does, and your children, by people carrying guns. While a stream of white people walks through unmolested.
Every time, for your whole life, you and everyone else that merely resembles you in some way are singled out for your appearance - regardless of who you are, what you’ve done, the danger you actually pose to society. Just because somewhere, sometime, it might catch a bad person.
And let’s not pretend that random strip searches don’t exist. If you travel a lot, the likelihood of one happening to you increases.
Most of us these days wouldn’t think that kind of racist fascism was okay. Because world history has shown the danger of profiling by race for human rights. But, whatever, I’m not you I guess.