About 2000 SACP supporters dispersed in Khutsong in the North West on Saturday after a "peaceful" rally, according to organisers.
"We are happy that the rally went off without any nasty incidents," said the SACP's Gauteng provincial secretary, Zico Tamela.
The rally, held on Saturday to commemorate the party's 86th anniversary, was a run-up to its 12th national congress, to be held in Port Elizabeth from July 11 to July 15.
"We wanted to highlight the role of the community in the struggle for democracy and the ongoing role of the party in its struggle for socialism," said Tamela.
Tamela said Gauteng's SACP believed that the party should contest the 2009 elections and run independently of other parties.
Tamela said the crowd "roared with approval" when party's intentions were made known to its supporters. - Sapa