Arguments over Palestine

I put a funny bumper sticker on my car today. My wife got stickers that say “free Palestine” on them and offered me one to put on my car and I said “maybe”. I have a certain vibe going on with my stickers and I don’t think it’d fit in but I’d take the sticker anyway and put it somewhere else. My wife called out my sticker and said “oh you can put that sticker on your car but not one for Palestine” and I said “I don’t know” because I felt her getting aggressive in her tone. She’s very radical and has a hard time letting political things go especially when you disagree with her, which has creates hardship in our relationship at times. She started lecturing me about how children are dying and I’m putting a funny bumper sticker on my car but not one in support of Palestine. I told her I’m beyond empathetic with what’s happening there and just cause I’m not putting that sticker on my car doesn’t mean I’m anti Palestine I just prefer it somewhere else. She continued on about how I don’t do anything to show any activism and putting this sticker on my car was the least I could do since I don’t protest. This is a reoccurring argument in our relationship for whatever reason. Am I doing something wrong??