Because the US/west gets to decide who the terrorist is? I mean the US can invade a country to protect against communism, but Palestinians protecting themselves* (yes, I agree the asterisk is doing some heavy lifting) are terrorists. So on and so forth.
As someone from East, being politically active and living as an expat in a western country, I learnt this fact/double standards the hard way?

Life's fucked, no doubts. But that doesn't mean you make comments that could potentially harm vulnerable people