It's no secret that if you defy the authorities they escalate the amount of coercion they use. You just need to follow the progression far enough to get to the violence.
They start with a polite court summons, then send a police officer to your home, and if you don't come quietly they'll physically force you. If you manage to resist that, well now you're resisting arrest so it doesn't even matter what the original summons was for. They'll escalate to tasers, nightsticks, maybe tear gas. You probably need guns on your side to resist past that point, which means the police get their guns out, and they've got more guys and more guns than you. You most likely end up dead, but definitely not resisting anymore. At no point will they say "Gee guys, this is just too much effort, guess we better let him do whatever he wants."
There is implied violence in every government directive. You don't usually see it because almost nobody has the will and the means to push it that far, but it's still there. I think people would do well to remember that when casually calling for things to be made illegal.
That said, I actually agree with the idea of banning antibiotics in agriculture. It's quite important, and a classic market failure/tragedy of the commons situation that you sadly do need government to solve.