I have no problem with a suspicionless search of an area of interest. I have no problem with homeowners giving consent to search. I do have a problem with coerced consent and/or warrantless search and seizure of private property absent reasonable suspicion. I understand how exigent circumstance is supposed to work and really don't see how it applies in this 20-block search.
I also don't really trust the labeling of the video. It isn't out of the realm of possibility that somebody took video of something else, like a drug bust, and labelled it this way on youtube. It could also be that the homeowners got belligerent and made threats to the police, or that there was actionable intelligence on that specific house in the course of the search. I think we'd be hearing more from the hundreds of homeowners who had their 4th amendment rights violated if it really went down like the person who posted the video said it did.