外媒：菲律宾总统府附近发生骚乱，示威者与警察发生肢体冲突，49人被捕

Core Points - A nationwide anti-corruption protest erupted in the Philippines on September 21, leading to clashes between demonstrators and police near the presidential palace [1][3] - Approximately 49 individuals were arrested for throwing stones, bottles, and Molotov cocktails at police, resulting in injuries to around 70 law enforcement officers [3] - The protests were sparked by allegations of corruption in government flood control and infrastructure projects, with estimated losses from a scandal involving fake flood control projects reaching nearly $18 billion, equivalent to about 1 trillion Philippine pesos [3] Summary by Category - Protest Details - The protests occurred in over 20 cities across the Philippines, marking the largest demonstration since President Marcos took office [3] - The event has been referred to as the "trillion peso march" due to the scale of the alleged corruption [3] - Police Response - Manila police reported that about 100 individuals armed with sticks participated in the riots, and the situation was declared "under control" after arrests were made [3] - The police emphasized their intolerance for violence and destruction during the protests [3] - Government Involvement - The protests were specifically aimed at addressing corruption in government projects, highlighting public dissatisfaction with the current administration's handling of infrastructure issues [3]