Tolerance is the pillar of a liberal society, but it has been lately being abused, putting in danger this very same pillar.

Let's start to understand that tolerate doesn't mean to like something, tolerate means to allow others to do things their way even if you don't like it.

A fair example of this abuse lately are the so called "gay rights". WTF are "gay rights"?! I take a c*** up the a** so I want special rights for it?! Get real! What's next? A special parking lot for gay people? A gay soccer league? oh! Wait!...
Oddities can be tolerated, you and your boyfriend like to dress like women and chase each other around the house? Great... do it! But don't force the society to play along. And no you're not "gender fluid" or any other idiotic thing, you're just a guy or a girl, regardless. Deal with it!

So to a point, this issue - and many - are no longer on the tolerance realm, instead they're trying to shove oddities down society throat and demand society to like it instead of tolerate it.
This puts a danger on liberalism, as more and more people starts to react to be getting oddities shoved down their throat and when it turns around liberalism will be taken the blame.