This only testifies the statement in the last Hadith, "They will call to the truth, but they will not be people of the truth" !
There is a group in Fb named 'Humanity 4 Palestine' or something like that, ok I will check for your news.
I think there should be a 'Anti-khariji battalion', because the Hadith says- "So, where?ever you find them, kill them, for who ?ever kills them shall have reward on the Day of Resurrection."!
And about Syria the prophesy says- "When the People of SYRIA become evil, there will be no good for you anymore."!
The emerge of ISIS doesn't prove that Islam is false rather testifies that Muhammad (pbuh) is a true prophet by making his prophesies 100% true!
Allah save us from these heretics!