https://nationalpost.com/opinion/dont-whitewash-hamass-homophobia
The only thing I would add is that, as Leor mentioned, people like this are typically anti-Western and anti-capitalist, which makes the nail polish, the modish high-waisted jeans and the $550 headphones paired with the Chinese sweatshop-made terrorist scarf one giant walking "IRONY" sign.
If we airdropped him into Gaza, and even granted him a magical, invisible protective shield, rendering him unable to be murdered by the Hamas terrorists who salivate at the possibility, he would despise living in a place where he couldn't shop for nail polish on a whim, or get AppleCare support for his outlandishly expensive headphones.
The people who've adopted these activist ideologies are the most privileged, most pampered people who have ever existed on the planet at any time, ever. Imagine having the opportunity to go to college and wasting six-figures on vacuous, intellectually and academically bankrupt courses like Gender Studies or Ethnic Studies, which is where these ideologies fester, and then insisting the society you hate waive your debt.
"Pro-Palestine" is a luxury belief the privileged and elite never have to bear the consequences of. Taking these people seriously is a grave mistake.