I’m not a big fan of so-called “Palestinians”.. but… that’s not the point.
You’re experiencing differences between some sets of people and others. Sometimes people classify “bad experiences” as racism. As long as realize that not ever person of every race acts the same, I don’t think it’s racism. Keeping your eyes and ears open and seeing that sometimes different cultures act differently, and understanding the meaning of these reactions is, in my opinion, wisdom, and will teach you to how interact with people of all cultures better.