If you are comfortable with your understanding of the situation and arguing for whichever side you choose to support instead of just refusing to hear anything to the contrary then support whoever you want.

Just know this isn’t like a sports team where there’s only superficial differences. It’s also ok to say I’m not informed enough to take one side or the other, or maybe only lean one way. You can point to unethical behavior on both sides, but I think it’s not unreasonable for people to hold one side more at blame than the other. Look into the history of the region and the ongoing discussion.