-There's only one group of people on the planet beheading other people who do not believe as they do.
-There's only one group of people pushing gays off rooftops.
-There's only one group of people flying airliners into skyscrapers.
-There's only one group of people vowing to exterminate all other groups.
-There's only one group of people carrying out daily suicide bombings.
-There's only one group of people that strap bombs to their children and send them into crowded marketplaces to die and kill others. 
-There's only one group of people calling America "the great Satan" and vowing to kill Americans indiscriminately.
-There's only one group of people that have legalized pedophilia, honor killings of women and daughters, oppressing women, male guardianship of women, modesty dress codes, lack of marital rights, forced marriage, stoning deaths of homosexuals, women committing adultery, etc.

And that group is defended and supported by the Western Left (read Merkel, Hillary & Obama)