Vivien Thomas, from janitor to pioneer in heart surgery

Vivien Thomas was an African-American man who went from janitor to lab technician to pioneer in heart surgery at Johns Hopkins. Racial barriers in the 1930s created huge obstacles for him, but he never gave up on his passion for medicine. Subscribe to WBAL on YouTube now for more:http://bit.ly/1oJSRCN Get more Baltimore news: http://wbaltv.com Like us:   / wbaltv11   Follow us:   / wbaltv11   Google+: https://plus.google.com/+wbaltv11