By Mitra Taj The death toll in protests that have convulsed Peru rose above 20 on late last week, with tensions centered in the highland city of Ayacucho, where eight people were killed in clashes between anti-government demonstrators and military officers. The demonstrations and ensuing violence have hampered efforts by the new president, Dina Boluarte, to establish control over the country, with two ministers in her government resigning Friday and protesters in the streets