It does not matter what you think of a country, burning a flag is incredibly disrespectful, unless its a flag belonging to terrorism, as they are not nation. But other than that, you shouldn't do it because of the sheer disrespect it has for the people living their. And your lucky you live in America where you can do this and walk away a free man, if you do this in North Korea, its a definite death sentence. So people need to be grateful where they live. As a lot o people have things worse than you, as theirs a saying, Americans are some of the most spoiled people.
I see, but if this question were given to the anti Zionist stream, their would be different answers, as your last sentence, "And probably be upset by stating this may have not been his intention, war." Would change as they believe he wanted war.