The East and West Coasts can’t hog all the excitement. While militant Antifa types attack Trump supporters in Berkeley, rowdy snowflakes hustle conservative speakers off campus, and masked hooligans occupy streets in New York, Colorado could be cultivating some Leftist violence of its own…in the cause of making energy less plentiful and more expensive. Last week, the Boulder Daily Camera published a letter asking, whether, if oil and gas companies drill too close to homes, thus “threatening our lives and our children’s lives, then don’t we have a moral responsibility to blow up wells and eliminate fracking and workers?” The...