Known as the Pied Piper of Manila, Carlos Celdran has built an internationally recognized brand from his walking tours of the city's classic downtown. Frequently seen taking celebrities on private multi-media cultural tours, Carlos has become quite famous in his own right. He's even a product endorser these days.

Instead of ignoring the surrounding poverty that other tour guides might find inconveniently jarring, he's decided to incorporate social advocacy into his tour. He's been distributing free contraceptives to anyone on the streets who's wanted them since 2003. This is a politically gutsy move in a city where the Catholic Church has so much clout.

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