With a different group of people, I could have been though. I've seen articles written to the effect of "if you are against rent control, you must hate the hard working people who benefit from it."
I picked a somewhat less controversial example, where I did speak up. As a mostly conservative, Catholic person in tech, there are plenty of other times where I understand my perspective is not welcomed, and have not bothered to speak up For a just a few examples: people claiming Catholic nuns are slave labor; people printing random quotes from the Bible and making fun of it without actually studying it; people making derogatory comments about religious people. In all of these cases, the people in question made the comments assuming that everyone around them saw the world a certain way (i.e., was not religious).