I'm afraid her credentials are a wee bit more solid than some anonymous hack who touts the establishment line on pot websites:
Cynthia Ann McKinney (born March 17, 1955) is a former US Congresswoman and a member of the Green Party since 2007. As a member of the Democratic Party, she served six terms as a member of the United States House of Representatives. In 2008, the Green Party nominated McKinney for President of the United States. She is the first African-American woman to have represented Georgia in the House.
In February of 2010, Cynthia McKinney was awarded the 'Peace through Conscience' award from the Munich American Peace Committee(MAPC / http://www.mapc-web.de
McKinney has been featured in a full-length documentary titled American Blackout. On April 14, 2006, she received the key to the city of Sarasota, Florida, and was doubly honored when the city named April 8 as "Congresswoman Cynthia McKinney Day" in Sarasota. On May 1, 2004, during her hiatus from office, McKinney was awarded the fifth annual Backbone Award by the Backbone Campaign "because she was willing to challenge the Bush administration and called for an investigation into 9-11 when few others dared to air their criticism and questions."http://en.wikipedia.org/wiki/Cynthia_McKinney
If you think the US government is beyond killing their own people, think again.