LOS ANGELES, March 27 (TheWrap.com) - "The Hunger Games" and stars Lenny Kravitz and Amandla Stenberg have been targeted in a series of racist tweets. The bulk of the complaints center on the casting of black actors as characters that some Twitter users argue were portrayed as white in the Suzanne Collins' hit book. Kravitz plays a stylist named Cinna. Stenberg portrays Rue, the brave little girl who nurses Katniss (Jennifer Lawrence) back to health at a key point in the film. As E! Online notes, contrary to these complaints, Collins actually depicts Rue as having "dark brown skin and eyes. ...