Verses from the Koran

There ought to be some that forbid murder, like the Charlie Hebdo massacre.  Only, I don't know the verses.  I haven't read the Koran.  I'm not planning to, either. 
  But there oughta be some Muslim scholars who do know the verses. (if they exist, if they don't, that tells you something).  Those scholars ought to be quoting the relevant verses, verses that might make us non-believers consider Islam to actually be a "religion of peace".  I am aware that Islam lacks an ecclesiastic structure like Catholicism.  But still, there ought to be some imams of decent standing whose words would carry weight.