[jfengel]

He was, actually. He got into fights with pretty much everybody -- and not just people in power.

The story is about a billion times more complicated than "the church burned him to hide the truth about science". He was, indeed, a heretic, as the Church defined it, and "science" had little to nothing to do with it.

That does not, of course, justify any of what happened to Bruno. But the oft-repeated story of "Giordano Bruno died so that I could have an all-purpose martyr for anything I want to disagree with" is false. It's worth reading a biography, or at least the Wikipedia page:

https://en.wikipedia.org/wiki/Giordano_Bruno