Complex sentence: After the military took over the government in October 1968, rock was outcast as an alienating phenomenon by the government of General Juan Velasco Alvarado in various ways: banning concerts in key venues and even banning a highly anticipated Carlos Santana concert in 1971.
Split into simpler sentences: After the military coup in October 1968, rock music was branded an alienating phenomenon by the government of General Juan Velasco Alvarado. There was a ban of concerts in key venues including a highly anticipated Carlos Santana concert in 1971.