Hong Kong student protest leaders Joshua Wong and Lester Shum were among more than 100 arrested amid heated confrontations as authorities moved to clear demonstration camps in the Mong Kok district for a second day. Wong, the 18-year old founder of the secondary-school activist group Scholarism, and Shum, deputy secretary general of the Hong Kong Federation of Students, were arrested after police and bailiffs moved to clear barricades on Nathan Road in the bustling commercial area. By midday Wednesday, authorities had cleared barricades and tents from the long-established protest camp. Prior to his arrest, Shum told CNN he urged protesters to remain on the streets until the "last second."