I just found the "Tracking Token Stripper 2.1" also works with Firefox 62.0 (I don't know older, maybe it does) which removes #UTM
tokens from the to-be requested URLs. I tried it with Firefox' own about:
page and it worked, even from within the one you can reach over Help->About
athat UTM is #Google-Analytics
... So, if you request such URLs where that tracking pixel is installed, #Google
(and so the #NSA
)knows that you clicked it e.g. from an email or #RSS
It seem to be written for Chrome, so also these users can protect themselves.