Anthrax

There are 2 bands named Anthrax:

1) Anthrax is an American, New York City-based thrash metal band, who released its first full-length album in 1984. The band was one of the most popular bands of the 1980s thrash metal scene and are notable for combining metal with rap and hardcore music early on. They have sold over 10 million albums worldwide and are classified as one of the "big four" of thrash metal alongside Metallica, Megadeth, and Slayer.

2) Anthrax were an anarcho-punk band formed in Gravesend, Kent, England in 1980. They recorded their first demo in 1981 and went on to release two 7" EPs on Crass Records and Small Wonder. They appeared on compilations released by Crass Records, Mortarhate Records and Fightback Records. They toured outside the UK twice in the Netherlands with Dutch band The Ex.
In 2007 the band compiled a compilation CD entitled One Last Drop which includes both demos, both EPs, the Mortarhate compilation track and 2 live tracks.