As dedicated Hip Hop fans celebrated what would’ve been Biggie’s 50th birthday on Saturday (May 21), rare footage of fellow rap luminary 2Pac has surfaced online. On Thursday (May 19), 2Pac’s former bodyguard Kaiso Aaron Allen — who previously worked for Public Enemy’s Chuck D — uploaded an old video of the late MC on tour with Digital Underground to his Instagram account. “32 YEARS LATER …