Here’s a petition worth “signing,” if only to help them make a point. Avaaz.org – The World in Action Robert Mugabe’s government has withheld the results of the national elections–and threatens to use violence and fraud to hold on to power. Mugabe has resisted international pressure–but South Africa’s Thabo Mbeki, who has Mugabe’s ear, might listen. A global outcry is needed to ensure that Mbeki knows his status as a global and regional leader is on the line: the world is turning to him to help bring justice for the people of Zimbabwe. This petition will be delivered through diplomatic…