There are multiple bands that go by the name Obstruction 1. Obstruction is also a heavy metal band formed in Hungary in 1995.
http://www.obstruction.hu
Obstruction's Facebook fan page 2. Obstruction was a hardcore band from Notre Dame, Indiana. They formed in 1996 and recorded a cassette tape in 1997. http://www.myspace.com/obstructionpunkrock 3. Obstruction is also a thrash punk band from Charlotte, North Carolina (USA), formed in 2006.
http://www.myspace.com/obstructionthrash


Read more about Obstruction on Last.fm.