I believe you can protest whatever, even things that are not real (like the so called genocide, where the population actually grows). There should of course be limits to your protest: violence against people you disagree with should never be an option.
PS: if you can stop the war by returning all the hostages, it's not a genocide.
"Never believe that anti-Semites are completely unaware of the absurdity of their replies. They know that their remarks are frivolous, open to challenge. But they are amusing themselves, for it is their adversary who is obliged to use words responsibly, since he believes in words. The anti-Semites have the right to play. They even like to play with discourse for, by giving ridiculous reasons, they discredit the seriousness of their interlocutors. They delight in acting in bad faith, since they seek not to persuade by sound argument but to intimidate and disconcert. If you press them too closely, they will abruptly fall silent, loftily indicating by some phrase that the time for argument is past."
