en.wikipedia.org/wiki/Spanish_Inquisition#Death_tolls
Scroll down to Sodomy, there were 35 (known) executions. There are better examples, such as the early Christian Roman Emperors, Medieval France and the Buggery laws of England which were all religiously motivated and which you can also read a brief overview of here
en.wikipedia.org/wiki/Violence_against_LGBT_people .
I have to teach against the practice as my position as a lecturer within a Catholic institution but privately when I’m not on the clock? I’m not going to, I’ve got no argument against it, on a secular level it’s defending the indefensible and I can see that.
One reason why people have to impose their view as you put it is obligation, I would review the Catholic Church’s mass excommunications for anyone who voted for the socialist/communist party in Italy. It’s still in force today, a Catholic cannot vote for a party which promotes abortion or gay marriage otherwise they cannot receive the sacraments. Catholics are expected to vote against it (or may choose to abstain, which depending on who you talk to is just as sinful).