The original post-punk movement ended as the bands associated with the movement turned away from its aesthetics, often in favor of more commercial sounds (such as new wave). Many of these groups would continue recording as part of the new pop movement, with entryism becoming a popular concept. In the United States, driven by MTV and modern rock radio stations, a number of post-punk acts had an influence on or became part of the Second British Invasion of "New Music" there. Some shifted to a more commercial new wave sound (such as Gang of Four), while others were fixtures on American college radio and became early examples of alternative rock, such as R.E.M. One band to emerge from post-punk was U2, which infused elements of religious imagery and political commentary into its often anthemic music.
