In a true liberal democracy, the people themselves enforce these rights. The people must of course preserve some spirit of resistance, which provides the "militant" twist in parent's description of a "militant democracy".
While the German constitution says that all Germans have the right to resist against anyone seeking to abolish democratic fundamentals, there's not really a provision for it to be by violent means.
It's not "militant democracy", it does not point to the means, but to the idea that it's not possible to abolish democracy by legal means. It's a legal concept, not a plan to follow in case of emergency.
But what if they don't? A lot of countries in the middle east are profoundly not liberal. If things play out in an un-liberal/intolerant way, do we step in and "fix" them so that they meet our own standards?
It's not "militant democracy", it does not point to the means, but to the idea that it's not possible to abolish democracy by legal means. It's a legal concept, not a plan to follow in case of emergency.