1) Bulldozer is an Italian speed/thrash/proto-black metal band formed in 1980. Their music was frequently referred to as Italy's answer to Venom, and on the strength of their debut album, 1985's "Day Of Wrath" (produced by Algy Ward of Tank), it's easy why this was the case. Alberto Contini's bass and vocals both strongly resembled his Venom counterpart Cronos, and the band's messy Satanic pre-thrash metal was indeed quite similar to Venom's first couple of albums.
These are photos from concerts where Bulldozer played, so they may be of other bands that played the concert as well.
Hell and Heaven Metal Fest 2016 Jul 23, 2016 Mexico City, Mexico City, Mexico Uploaded by Jcharlesblack2
Corona Hell & Heaven Metal Fest 2016 Jul 23, 2016 Mexico City, Mexico City, Mexico Uploaded by Denzho