Direct YouTube Link: Secretary Rubio delivers opening remarks at the Ministerial on the Resurgence of Political TerrorismA whole industry grew up in our countries around the study of extremism. We have think tanks and fellowships and journals and consultancies, with the unspoken understanding among them that the only kind of political violence that was a true threat to our system – I’m sorry – that only one kind of political violence was a true threat to the system. A bomb planted by a neo-Nazi group was a nefarious and murderous act of evil. It is. But a bomb planted by...