There are more than one band with the name Backlash.
1) Backlash from New Jersey were formed in 1991, the band recorded and released a demo, two 7”s and a 12” and played over 300 shows. They played hardcore inspired by legendary NYHC bands like Judge, Leeway, Cro-Mags and Sick of It All.
2) Formed in Lidkoping, Sweden in 1998 by three talented young men, Backlash now (2k6-08) two albums and a few Eps later stands at the frontier of Swedish electronic music. The combination of Niklas sensitive compositions, Oskars battering sound engineering and Eriks brute force of singing creates a new hard electronic sound that few others has manage to create. Music in the borderlands of minimalistic techno and electro-pop.
3) The Dutch metal band Backlash was formed in Vlissingen in 1999. They have released two demos (2001 & 2003) , a live video cd (2002) and one full-length (The Binary Code, 2004). They describe their music - which is a mix of death metal, thrash and heavy metal - as ‘brutal metal’. The band broke up in 2005, but in the end of 2007 they decided to reform. More info on http://www.backlash.nl/
; discography is available on RateYourMusic.com.