Complex sentence: The greatest tragedy to befall the people of Simon's Town, was the Forced Removals under the Group Areas Act of "Apartheid" government, on 1 September 1967 led to the devastation of the Simon's Town community.
Split into simpler sentences: The greatest tragedy to befall the people of Simon's Town, was the Forced Removals under the Group Areas Act by the "Apartheid" government in 1967. It led to the devastation of the Simon's Town community.