Music from the 1950s to the present has been a rebellious, youth-influenced form of expression against borders and limits. It began as rock-and-roll, rebelling against social norms, and later split into genres like protest rock and punk rock that opposed issues like racism and economic struggles. While initially rejected by older audiences, it grew in popularity among youth. Over time, as music evolved and society became more accepting of it, Canada shifted from a conservative to a more liberal and tolerant state.