Those who are fans of the rapper’s political messaging — first made prominent in his 2014 To Pimp a Butterfly album— were also satisfied by the presence of “Uncle Sam,” played by Samuel L.

Kendrick Lamar had nothing to prove during tonight’s highly anticipated Super Bowl halftime show, but that didn’t stop the rapper from putting on a legendary performance. After sweeping the Grammys ...

Jackson, dressed as Uncle Sam introduced Kendrick Lamar at New Orleans ... had been teased with an online snippet when his "GNX" album was released, then moved into “Squabble Up." ...