Okay,
this is an excerpt from Dershowitz' book, on a partisan website, but I include it just to show that the issue did exist.
Dershowitz wrote:
Several witnesses have stated under oath that Justice Rehnquist harassed minority voters during the early 1960's. Justice Rehnquist denies he harassed minority voters. James Brosnahan, a former assistant U.S. attorney in Phoenix from 1961 to 1963, said in a statement delivered to Congress that on election day in 1962, he and several assistant U.S. attorneys were assigned the task of receiving complaints alleging illegal interference with the voting process. The group received several complaints from precincts in South Phoenix. The precincts were predominately black and Hispanic. The complaints involved Justice Rehnquist. Broshnahan visited one of the precincts. When he arrived he saw Justice Rehnquist. There were reports that poll watchers had to physically push Rehnquist out of polling places to stop him from interfering with the voting rights of the minority citizens.
Alan Dershowitz, Supreme Injustice, Oxford University Press, 2001, pp. 242 - 244 n. 37
It was all over the news back when Rehnquist was first nominated. I would have to go back years before news was posted on the internet to get regular news source-I don't think CNN was even in existence when Rehnquist got nominated.
Really, you should have remembered.