I bet you would claim that a suicide bomber had no political motive either, that he/she simply wanted to die by "suicide by bomb".
Let's not forget, it's your fellow liberals that keep doing the murders. The woman who was shot in the face while holding her toddler son for daring to say "all lives matter", the Trump supporter who was stalked and murdered, the Patriot Prayer guy who was shot in the face by the Antifa "security" and on and on and on.................. No political terrorism in any of those because liberals can do no wrong.