Maybe, just maybe because most of the terrorism committed in the world today are disproportionately committed by Muslims... Nah, can't be -- must be discrimination!
Another thing always ignored by apologists for Islam is that trans-national terrorism is very close to 100% Islam-inspired. The non-Islamic groups that are cited for being major terror networks in recent years are ALL concentrated very tightly within their own societies (Tamil Tigers, ETA in Spain, IRA when it was still blowing people up in the UK, and terrorist rebels in Columbia). They are bad for the locales they target, but the vast vast majority of the world's citizens are not targets of those groups. That's not to make light of the horrors that occur within those 4 countries, but only ISLAMIC terrorism is widely trans-national and truly a global threat. Only ISLAMIC terrorism is a threat to just about anyone in the world, even many Muslims. None of us have to worry for a second about being harmed by the Tamil Tigers, ETA, IRA, or FARC unless we choose to go into the specific areas they are known to target. OTOH, any of us could be slaughtered by Islamo-fascist terrorists at any time, anywhere in the world. The threat of ISLAMIC terrorists is uniquely widespread and virulent, even if our individual statistical chances of being blown up are rather tiny (unless we are in Iraq, etc.).