They were "protestant" to many, though not all, of the policies and creeds of Catholic church in general.
because they were protesting the books, hence protestants.
The people were protesting some corrupt practices in the Catholic Church.
Protestant has the same word root as protest, so they took the name Protestant because they were protesting against the Catholic church
That is like asking "are people evil?" - it depends on your definition of "evil." All people have some capacity for good and evil, and protestants are no different. Protestants are a huge group and can't be taken as a unit. There are certainly people who are Protestant who are evil (most, if not all, high-level Nazis were Protestant, and most people would agree they were evil). But Protestants as a group are no more evil than any other group of people. Some Catholics believe Protestants are evil, because Protestants by definition are "protesting" the Roman Catholic Church's claim to sole authority over the church. But most Catholics, if they get to know some Protestants, realize that Protestants are no more less evil than anyone else.
what where carneros protesting at the whiiskey rebelión
I suspect that you are protesting too strongly.
protestants to catholics
Protesting an oppressive regime.
If the protesting is peaceful and for a humanitarian cause, I would say it does do good.
they think that they are protesting something, but they are pointless hobos
Presbyterians are a subset of Protestants, so they are Protestants. Not all Protestants are Presbyterians, however.
They protesting the military draft. Draft riots, draft card burning.