Robert Johnson was a Trinidadian citizen convicted in Canada of plotting to attack Hindus. He is present on the US Transportation Security Administration's no-fly list, without a date of birth or middle initial. As a result, anyone named "Robert Johnson", one of the most common names in America, faces problems boarding an airplane in that country. Wikipedia
The definitive Wikipedia entry for Robert Johnson. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Robert_Johnson_%28terrorist%29