I wouldn't say murder falls under intolerance. It certainly can, but not all the time.

if you’re not actively hurting someone besides yourself, you should be tolerated.

Who gets to define what constitutes not actively hurting someone besides yourself? Is it just as defined by you or do other people get a say? What do you do when someone decides that not wearing a hijab or extra-marital sex is actively harming others?

I hope that illustrates why this is not simple at all. It's incredibly complex.

And as I was saying in my initial comment, it's literally impossible to objectively define tolerance. But, you have to choose to tolerate some things and not others (because they're mutually exclusive). So you end up with different forms of intolerance of behaviors that you deem intolerant.

Along with that, we decide that intolerance for other reasons (ie, because of a person’s genetic makeup or mode of expression) is itself harmful.

And we decide that intolerance is acceptable for many other reasons. You don't tolerate ignorant people. You don't tolerate people who cannot arrive on time. You don't tolerate people who are too rude. Intolerance of those aspects

Now we can find tune and dicker about where that line of injury is, and of course there are special cases where the alleged hurt is spread around and it’s hard to decide how to adjudicate that, but that’s what the law and all its apparatus is for, after all.

The special cases are the ones where it's actually clear. The majority of the cases are where we struggle to know where to draw the line.