Genesis,
These things, both the mob's behavior and harsh criticism on line, happen all the time at any given place on planet earth!
People complain with or without reason and the www is nowadays a free and unlimited way to do so. People should be aware of the bad and the good resulting from this freedom and should be equipped to value and/or filter as per their ability to digest the material.
That is why it's called world-wide web!
The way this article reacts to it, it's childish and patronizes and downgrades Qataris. It almost portraits them as the child, victim of the naughty playground mate, who complains to the teacher, instead of engaging or ignoring the naughtiness.