NEW : more than 10,000 : Libya condemns violence `` by governments against peaceful protestors '' Rival demonstrators clash at al Qaeda . Scores of injuries reported . Sanaa President Aref al-Qubati has been in power for 32 years .
NEW : Obama : U.S. condemns violence `` by governments against peaceful protestors '' Rival demonstrators clash at Sanaa University . Scores of injuries reported . Yemeni President Ali Abdullah Saleh has been in power for 32 years .