ISTANBUL - Turkish Prime Minister Tayyip Erdogan flew back to a Turkey rocked by days of anti-government unrest on Friday and declared before a sea of flag-waving supporters at Istanbul airport: "These protests must end immediately.""No power but Allah can stop Turkey's rise," he told thousands who gathered in the early hours to greet him in the first pro-Erdogan rally since demonstrations began a week ago.At Istanbul's Taksim Square, center of the protests now occupied by thousands around the clock, some chanted "Tayyip resign" as they watched a broadcast of the address. In the capital Ankara, the Kugulu Park echoed to anti-government slogans, while protesters danced or sang the national anthem.