You shouldn't be ashamed of YOUR culture. These people do NOT represent you or your culture. As someone who grew up in a Muslim family, these people definitely don't represent my culture and never fucking will. They're scum.
Muslims world wide need to condemn these attacks, but that's hard to achieve when this type of thinking is on the rise in the Middle East--ISIS and such attack the things they fear most, education itself and educated individuals(especially so, educated females). It's easier to manipulate people into your way of thinking when they're not educated, and those reasons have a lot of poor, uneducated people which makes it easy.
Just talking about all this is difficult--truly, I really just wish these people would be wiped out and these disgusting acts of violence would stop. Though I get your point, it's incredibly hard growing up as a Muslim and watching all this occur. These people are sick.