

So Europe will fight the billionaires who use their surplus money to buy real estate and drive up prices instead of investing in new companies to create more and better paying jobs?
At least in Italy, price are high because is impossibily hard to retake a rented house in case of a bad tenant, so people keep houses empty, which add to the fact that in most places there is no more space to build new ones.
They say to use PDQ for images which should output a similar hash for similar images (but why MD5 for video ?). So probably it is only a threshold problem.
The algorithm is explained here
https://raw.githubusercontent.com/facebook/ThreatExchange/main/hashing/hashing.pdf
it is not an hash in the cryptographic sense.