What happens when "Marxists don't get their way"? WTF is he talking about?
Trying to make some sense of it, I have to conclude he's saying that if Marxists aren't allowed to run the country (and install a communist economic system?) , then socio-economic developments will be such that you'll end up with right-wing anti-abortion nuts assassinating democratically-elected (centrist) politicians?
Thus, the conclusion he presumably wants us to draw, is that it's important to put Marxists in charge of the country, so as to avert this kind of terrorism?