I don't understand one thing... if you are already so damn rich, how would it hurt to give your share of the taxes in all honesty. I get it if you are on the verge of poverty or even some middle class families that have to think twice before buying normal necessities... if you are loaded with luxuries, the least you could do is give the share to the public that makes you who you are.
And this isn't just for PC or Katrina... these two were the unlucky ones who got picked, almost all celebrities probably pull scams... SRK, Salman, Bachan family, Kareena, Ranbir, etc...