Solidarity with Zimbabwe

I am responding to Ronald Wesso's article on the challenges for solidarity with Zimbabwe activists. I am a member of Amnesty International South Africa. Our group has a great concern for what is happening in Zimbabwe. We would like to play a more active role than writing letters to Robert Mugabe and his cronies in the government, which remain forever unanswered. If we wished to offer assistance, how is this possible without endangering the human rights defenders in Zimbabwe?