A protester reinforces a barricade as another throws back at police a tear gas canister in Istanbul early Tuesday, June 4, 2013. Turkish riot police launched round after round of tear gas against ... more 
A protester reinforces a barricade as another throws back at police a tear gas canister in Istanbul early Tuesday, June 4, 2013. Turkish riot police launched round after round of tear gas against protesters on Monday, the fourth day of violent demonstrations, as the president and the prime minister staked competing positions on the unrest. Prime Minister Recep Tayyip Erdogan rejected the protesters' demands that he resign and dismissed the demonstrations as the work of Turkey's opposition. President Abdullah Gul, for his part, praised the mostly peaceful protesters as expressing their democratic rights. (AP Photo/Thanassis Stavrakis) less 
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Associated Press | Photo By Thanassis Stavrakis
Tue, Jun 4, 2013 2:49 AM EDT