The reports from 2014 said that BLM personell planned to remove Bundy's cattle from federal land that he had not paid for in years. Friends and sympathizers, some armed, showed up to stop the cattle confiscation. No threat of violence was given from the defenders. As I recall, a court ordered the BLM to stand down. BLM personell do not have the legal standing as police officers do with regards to employing violence.

Bundy owes money, but is the treatment of him balanced? The Norwegian mass murderer Anders Behring Breivik sued the Norwegian state for cruel and inhuman treatment, as he has solitary confinement 23 hours a day. He won! The government will appeal.

The suffragettes broke the laws, and changed it.
Blacks and whites protested peacefully against racial discrimination and were sometimes violently attacked. But they got the laws changed.
Citizens of all sorts protested against the Vietnam war, sometimes in violent confrontation with police and other representatives of the governments armed entities. The war was ended.
People marched for gay rights. Most importantly, that being gay should no longer be outlawed. Today it isn't.

Why should people showing up to protest against the treatment of farmers, by the government agencies and officials, be called internal terrorists, etc?

Cowardly men always plot to label Freedom as anarchy!