I'm very pro police, but in this case...

1)They should have had a warrant

or

2)At least tried to talk to the nurse for a bit to convince her to help them, rather than just immediately going to force.

She was actually following the protocol and rules of her workplace by not giving them what they wanted. They shouldn't have used force at all unless they had the warrant and she refused, or if they had some legal right to do it, and she wouldn't comply even after multiple times of offering her the chance to comply. In the video it looks like she did what she thought she was supposed to do with hesitance, and they just went right to using physical force that didn't seem very necessary from what I can actually tell in the video. It's not like she was a 6'6, 300 pound guy, in need of brutal force to get her attention.

That's just my opinion. I could be wrong.

https://media.giphy.com/media/tHp53MChQPF5u/giphy.gif

I actually watched the first half of the full video to gain some context. Unfortunately, they were wrong in every way they could be.

Their shift commander told them to arrest her if they can't get blood. But:

-They had no right to the blood as they had no probable cause for a search, which is why...

- They needed a search warrant. They couldn't get one because a judge has to sign it, but wouldn't since they had no right to search.

- Even if they had a warrant, that would simply give them the right to take the blood, not the right to compel someone else to take the blood. If a given nurse refuses to do her job, she is in trouble with the hospital, not the law. So long as she doesn't stop them from taking blood (or having someone take it) then she is not interfering.

-If she is interfering, her level of non-compliance with the arrest should determine the amount of force used facilitate the arrest.

It sucks that they messed this up so massively. On the bright side, that nurse is going to get a ton of money from the lawsuit, as she should.