I sincerely hope the posts here are ironic. This looks to be an example of excessive use of police force but it's being celebrated by red avatars (and probably only rejected by blue avatars) because it's in support of a Democratic political cause. In all likelihood, this woman didn't need to be tazed to be restrained and that could plausibly carry health risks greater than her not wearing a mask.
She was resisting arrest for trespassing. At that point the options were either tazing or tackling and as a general rule, tazing is safer for all involved. She escalated the situation at multiple stages. What I don't understand is how she was allowed in if she wasn't wearing a mask upon entry. That's really the only place I can fault the officials here, assuming she didn't wear a mask upon entry and then took if off later.