Since WW2 maybe, with a very, very small sample. But historically, if you have a minority religion/heresy, you better live under a Muslim caliphate than a Christian monarch not that it's great by any mean, but the moors are a great example, they got what, a generation after the reconquista? Two? Hussites and especially cathares are probably the first religious genocide, with public rape of one of their leader and her daughters, and the destruction of all Cathare littérature and religious text.