Original: Ayers participated in the bombings of New York City Police Department headquarters in 1970 , the United States Capitol building in 1971 , and the Pentagon in 1972 , as he noted in his 2001 book , Fugitive Days .
Simplified: Ayers was part of the bombings of New York City Police Department headquarters in 1970 , the United States Capitol building in 1971 , and the Pentagon in 1972 .