Maybe they asked the person who answered the door if they could come in and look? Idk you don’t need a warrant if you ask and are told yes.
Yep. That works. You also don’t need a warrant under what is called “exigent circumstances” exception, shorthand for a fast moving emergency where there’s no time to get a warrant based on probable cause. Example would be you’re a cop and you just saw an armed criminal enter a house with small children looking out the window. The law, for a very long time, has permitted warrantless searches under such conditions. Can the exception be abused? yes, and it has been, and might have been here, depending on specific situations. But chalking this up to wholesale rejection of the Fourth is not realistic. Nothing defines “exigent circumstance” better than a bomb throwing terrorist running around in a residential neighborhood.
True they could ask and people have the right to let them in, but if they volunteered then why the prep walks and the guns waved in their face. There is a lot of difference between a cops just standing at your door questioning you and multiple cops standing at your door with a machine guns pointed at you.