Why GMA is Freeing Criminals

I can only think of one thing as to why GMA is freeing convicts from the bilibid prison. And this is to create a public perception that she is an emphatic and merciful president. And the next president should do the same for her in case she will be convicted from all the high profile crimes she & her husband allegedlly involved in.

So why only the rich convicts are being pardoned? And why the poor ones are being left out in the cold? I say its another tragic case of class discrimination. Wherein the rich can buy-off their freedom where the poor cannot.