There's a weekend festival at the La Brea Tar Pits starting tonight. Did you know La Brea means "the tar"? / Photo by Gamma Infinity via LAist's flickr pool. FREESTYLING*: Latin battle MCs take to the stage tonight at the Pico Rivera Sports Arena at 8 p.m. in the U.S. finals of the freestyle MC competition known as Red Bull Batalla de los Gallos. The free event will feature MCs from LA, SF and......