South Africa's ruling African National Congress will hold a second day of disciplinary hearings Wednesday against Julius Malema, the controversial president of its youth wing.

A policeman and five journalists were injured Tuesday after thousands of Malema supporters clashed with police outside ANC headquarters in Johannesburg during the first day of the hearings.

Police used stun grenades and water cannons to break up the protesters, who were seen burning ANC flags and pictures of President Jacob Zuma.

On Wednesday, ANC spokesperson said the hearings will continue at ANC headquarters, but may be moved to an undisclosed venue if violent protests continue.

Malema faces expulsion from the party after saying in July that the youth league would form a team to help oust Botswana's government, and calling Botswana a security threat to Africa. He also called the country a “puppet” of the United States. Malema later apologized for making the statement.

He has also angered many businessmen and ANC members by calling for the nationalization of South Africa's mines and farms.

The hearings are seen by some as a crucial test of power for President Zuma, whose rise to power in 2007 was largely aided by the youth league.