Zimbabwean President Robert Mugabe on Monday warned frustration among jobless youths could spark violent protests as the country prepares to vote on a new constitution, five years after deadly elections. "I wish to urge all Zimbabweans, all political parties, religious groups, civil society and other institutions to desist from engaging in violent campaigns during the elections," Mugabe told about 5,000 people at a memorial for fallen liberation leaders. Duration: 01:03