The Sheriff rolled over for the Feds from the beginning. He abrogated his elected authority. They were in route to a peaceful meeting. The only reason this went down the way it did is because the Feds decided it would go down like this. It didn't have to.
They may have been en route to a meeting, but they had previously broken laws and were subject to a lawful arrest. I think going into this they had to know they would eventually be arrested.
I'm not opposed to militias. I'm not opposed to what went down at the Bundy ranch. But this time in these circumstances, they should have went home before somebody got killed.