@steveh281 trolls get nuked from orbit, and for the rest you can use the mute option. I suggest keeping an open mind though. Not everyone agrees on everything, and keeping yourself open to those discussions makes for a better community. Be respectful, and debate in good faith. If things get heated, take a break from that discussion.
@steveh281 absolutely! You'll find far more engaging discussion here when it comes to more important topics. I think the best bit of advice I ever got when I joined was to utilize the mute button. That and using hashtag filters to follow specific topics.