Get a warrant, serve the warrant by knocking on the door with your sidearm holstered.
If you don’t want to do it this way, get a different job.
Exactly. And if you have someone you think is dangerous, observe them and take them down off site.
I don’t care who you are, there are moments in your every-day routine where you are vulnerable. If the police used their surveillance capabilities, they could easily determine a good time to take someone into custody, that wouldn’t involve smashing in doors, terrorizing family members, and destroying their home before one appearance in court.