That was over 33 years ago in 1988.
Today he is 91, and has starred in 91 movies in total, 41 since Mississippi Burning was released.
In Mississippi Burning, I think Gene Hackman looks:
Mississippi Burning scores 7.5 out of 10 on The Movie Database.
Gene Hackman's first acting role was as 'Norman' in Lilith, released in 1964 when he was 34.