The second day of Lollapolooza proceeded without any major weather glitches—at least, not enough to again shut the festival down. Hip-hop music offerings at Friday’s festival were a little lighter, though since Nielsen Music recently declared hip-hop the most popular music genre in the United States, surpassing rock music in popularity, various beats could be heard blasting from DJ Snake’s booth. Jidenna dapper dressed in a blood-red suit performed (“Bambi”) earlier in the day before opening an Lolla after show with Aminé and Towkio at the Concord Music Hall on Saturday night,while Vic Mensa previously on the festival bill at the BMI stage in years’ past made a surprise appearance just before DJ Snake set at the Perry’s stage. Mensa always an animated performer levitating the full length of the stage had the mosh pit churning to full effect during “U Mad.” Starting their set to Queen’s “We Are the Champions,” Run the Jewels (full performance here) said the duo had three rules of concert engagement, the second of which is not to violate women, Killer Mike said, or “we’ll punch you in the fucking face.” Advice well taken. The group made some diehard fanboy named Jacob a happy camper when they invited him to rap a few bars of “Legend Has It” after seeing the man holding up a sign from the audience making the request. “Bring your ass up to the stage then,” Killer Mike insisted, “Crowd-surf that motherfucker up here.” Mike later hoisted Jacob over his shoulder when he demonstrated some skills before launching into their own version of the song. Hip-hop fans may remember Chester Bennington from his nu-metal band Linkin Park’s collaboration with Jay-Z on Collision Course, of which “Numb/Encore” won Best Rap/Sung Collaboration at the 2006 Grammy Awards. At the end of their set, Run the Jewels dedicated the song “Down” to the late front man, who (distraught over the suicide of his friend Chris Cornell) also killed himself on what would have been the Soundgarden/Audioslave lead singer’s 53rd birthday.