Hmmm....also seems like that guy's religious affiliation- if any- was not listed as a motive, whatsoever.  It also seems that instance was nothing compared to the other 99.99% of terrorism, which is carried out by Muslims:   https://www.state.gov/j/ct/rls/crt/2015/index.htm
Of the listed 50 Terrorist Organizations, 44, or 90% of them are Muslim.