Chris Robinson has detailed two of the scariest concerts in Black Crowes history. The first took place in 1991 when his band performed as part of the Monsters of Rock concert in Moscow, alongside Metallica, Pantera and AC/DC. The show took place as the Soviet Union was dissolving, making for a tense backdrop. As Robinson recalled during an appearance on Club Random with Bill Maher, military presence was everywhere. “They tanked the building,” Robinson remembered, noting that the crowd was estimated at a million people. “Within the morass of people [officials] wanted to form some areas. So how …