A masked guy breaks down your door w/o an Article III warrant absent exigent circumstances? Yeah, I’d agree. Trick will be that pressing the murder charge would be federal since a federal agent dies in the line of official work (though illegal), which would give the president grounds to push for death.
Then it is really important to engage self protection. Put on respirators/gas masks. Wear thrift store coats. Carry dumb phones–you know, those phones that drug dealers use to use-- flip, prepaid. Carry a passport card. Heck, if you can obtain a Kevlar vest, it might save your life. Wear gloves, pads on your legs/knees under your clothes, a bike helmet. Those fuckers will throw you down on the pavement and injure you as much as they can especially once they got you on the ground and immobilized. Heck, I am a nurse and remember people who had spinal injuries wearing a plastic clamshell on their chest/back in order to keep it stabilzed… get those and dress warm underneath, and then over. It might save your spine.