Do those protesting for Gaza also protest about Sudan, Yemen, Rohingya, West Sahara, Yezidis, Uyghurs, Christians in Nigeria, Kurds, and so on?
Whenever I read this, I roll my eyes. This is one of the most ridiculous arguments.
You have to start somewhere and you can’t put your focus on everything. Plus your argument is a method to move the topic to “do you/they this and this and this and that?” Instead of the actual on-topic.