The protest was disrupted by a police crackdown targeting party officials, members, supporters, and even journalists covering the event.

The East African country’s leading opposition party said that its presidential candidate in the last election and its chairman were among dozens detained before a protest called to draw attention to the killing and abduction of government critics.

NAIROBI (Reuters) -Tanzanian police arrested three opposition leaders again on Monday, their party and police said, to stop anti-government protests in the commercial capital Dar es Salaam. The main opposition party CHADEMA's chairman Freeman Mbowe was detained on the street,