They held a rally in Santiago, calling for the screening of a new pro-Pinochet documentary to be banned.
The relatives say it is insensitive, but the government says it is a private event and it will not intervene.
More than 3,000 people disappeared or were killed during General Augusto Pinochet’s rule, which ended in 1990.
General Augusto Pinochet, who ruled the South American nation for 17 years, died in 2006.
The protesters held a rally at a former detention and torture centre in the Chilean capital.
Many wore photos of their relatives.
“In Chile, state-sponsored terrorism existed. Forced disappearances existed. Torture existed. Executions. And the systematic violation of hundreds of Chileans. We cannot allow this. We can’t allow a tribute to this,” Alejandra Arriaza, of the Corporation for the Promotion and Defence of People’s Rights was quoted as saying by the AP news agency.
The documentary, Pinochet, will be screened in a theatre in Santiago on Sunday.
The organizers say it aims to show General Augusto Pinochet as he really was, and not as the media portrayed him – as a ruthless dictator.
Right-wing politicians and former members of the Chilean military have been invited.
The controversy shows how divisive General Augusto Pinochet remains, nearly four decades after the coup that brought him to power.
For some he was a hero who saved Chile from Communism, but for others he was as brutal murderer who should be reviled, not applauded.
BHSLqovZGnkImage source: Wikimedia Commons President-elect Donald Trump celebrated his election victory at the Ultimate Fighting…
Millions of voters across the US chose to return Donald Trump to the White House…
Donald Trump declares victory in the US election as he addresses jubilant supporters in Florida.…
Stocks around the world are rising as Donald Trump appears to be on the cusp…
Donald Trump has won Pennsylvania, North Carolina and Georgia and taken a lead over Kamala…
Quincy Jones, the celebrated musician and producer who worked with Michael Jackson, Frank Sinatra, Ray…