manny pacquiao has released music video named ` i 'm fighting for filipinos '
the filipino boxer directed footage which shows poverty in the philippines .
pacquiao will go toe-to-toe with floyd mayweather in las vegas on may 2 .
read : pacquiao takes his training to the great outdoors as he jogs in la .
read : mayweather vs pacquiao referee to earn $ 10,000 -lrb- £ 6,800 -rrb- on may 2 .