The problem with the Quaran is that it is full of incitement for murder.
Have you read and discussed the Quran recently with others? What gave you that impression?
The Quran is full of incitement for murder and those Muslims who carry out their plans are followers of their book's instruction.
The Quran shouldn't be taken literally and some concepts may seem outdated. You should study it more closely and converse with other followers to see what their interpretations are.
If a Muslim does murder, it's because of the Quran. It's full of inciting texts that push them to do so.
People commit murder in the name of everything, including the safety of animals, and the rights of others. We have been murdering since the dawn of time, Islamic or otherwise. Pretending that everyone in a religion is violent seems to be a bad take, especially if you've never even read it.