BBM
The thing is, all we've seen as you describe it isn't necessarily all that is going on with LE behind the scene. I don't think I've ever been on a thread where there haven't been complaints about how LE is handling a situation and what they're not doing right. Usually (not always), when everything is made public, it's clear that LE was doing its job very well behind the scenes.
We have no idea what is really going on. I saw a comment on an article in which someone laid out a humorous scenario that LE is allowing free access and more militia to arrive so that more of them will be jailed eventually.

I'm not sure that's the case at all, but I'm going to assume LE has a plan and isn't just playing along with these guys. For me, it just feels better to give LE the benefit of the doubt until proven otherwise. There is nothing the militia would like more than for people to assume that LE is either a persecutor or incompetent. JMO