After leaving Time-Life, Shuker joined the Public Broadcast Laboratory, forerunner of PBS, and participated in two pioneering films -- 'The Chair,' about an attorney trying to save a condemned man, and 'Free At Last,' a 90-minute documentary about Dr. Martin Luther King Jr. that by chance was being made when King was murdered in 1968.

Based on that paragraph can we conclude that this sentence is true?
Martin Luther King was murdered in 1968.
yes