Let me put it that way. I have no problems, not even in principle, with people having a critical or negative attitude towards Israel (although they wouldn't hold those against other countries as a whole). But when the negative attitude and propaganda thereof arises from ignorance, projection, and the substitution of moral claims for factual knowledge, then I not only disagree but often respond. This can, at times, occur in harsh language. But you can stomach this, you do the same.