The left-wing totalitarians

For them, there is only one side of issues that matter to them: their side.

If you suggest there is another side to the issue, 

you are guilty of something they have conjured up: <b>bothsideism</b>.

These people are really remarkable in coming up with phrases to which they can associate a negative connotation.

To see some examples of who uses the term "bothsideism", see 

https://www.reddit.com/r/lgbt/s/9Kbu5FOAOQ

or

https://www.reddit.com/r/lgbt/s/TyfKEQoAuL