Again, it all depends on what led farmers to that point:
Scenario 1: They want Feb. changed from Black History Month to White Farmers Get Everything Free Month - the majority of the public would be against them, their land would eventually be taken (for a fair price of course) and handed over to people willing to farm. Emergency food stores would be opened and everything would be okay.
Scenario 2: The government is taking the first born from every farm and using them in medical experimentation: The majority of the public would side with the farmers and demand a change in policy. If change was not made, they would join with the farmers
to do what was necessary.
Obviously, it all depends on the public's view on the "correctness" of the farmers' position.
Same with the truckers, same with BLM.