They broke into the Democratic Party Headquarters that were located in the complex. They were looking for secret information and maybe planting bugs or tapping the phone lines.
It was a break-in at the headquarters of the Democratic National Committee at the Watergate Hotel that investigators discovered involved people very high in the Republican Party.
It was caused because four men, working on President Nixon's behalf, were caught after breaking in to a room in the Watergate Hotel in Washington DC where the Democratic Party had records used in...