TWO decades ago Barack Obama was elected as the first black president in history - but of the Harvard Law Review, rather than the US. Now a video has emerged of President Obama aged 29 presenting a Black History Minute public service announcement for TBS back in 1991. It is believed to be his first-ever appearance on national television and his voice sounds much deeper and monotonous compared to the present day. President Obama was talking about Charles Hamilton Houston, the black lawyer known for teaching Supreme Court Justice Thurgood Marshall. The two worked on the landmark court ruling Brown v Board of Education, which marked the end of colour segregation in public schools. 'The fact that Ive been elected shows a lot of progress, President Obama told the New York Times in 1990 of his election as Review president. President Obama, who also attended Columbia University, had previously spent four years leading an initiative helping poor black people in Chicago. He told the New York Times in 1990 that he intended to spend up to three years working in law and then go into politics or community work. DM