You guys have not read the OPs post. He is neither supporting or condemning the attacks but has pointed out, correctly, that there will be repercussions, copycats and more.
Look at Australia, our spastic Government is pushing for 100% renewables. 90% of inverters for rooftop solar panels are made in China. How easy would it be to rig those to explode or cause a critical mass outage of our electrical grid system.
No wonder our government is not responding, this is what happens when your internal manufacturing ability is decimated by the unions.