In England you go to jail if you shoot anyone, invading or not. Criminals are the kings.
Here I can state without reservation that there is no lawful reason for any law enforcement agency to do a violent "dynamic entry" into my home, and we do have incidents of LE impostors doing such home invasions in neighboring locations. So I would act as if it were, and most likely, (99% probability, in my humble opinion), unlawful invaders, being that anyone breaking down my security doors is not someone looking for donations to The 100 Club
. Measures appropriate to the situation would be implemented. Dealing with the aftermath would be hard, expensive,and undoubtedly life changing.
BTW, if anyone does ask for donations, that is a great outfit to donate to.