When Celebrities Donate, Why The Politicians Won't?

Be it a natural calamity or some other catastrophe, the whole nation, media looks at the film celebrities to contribute to the vulnerable families. It is because they lead a more luxurious life earning crores of rupees. Being the most influential people in society, the contributions celebs make also make headlines. But, are celebrities the only people to give donations? Certainly not. Although the government issues relief funds for every catastrophe, we rarely see the political leaders donating to the relief campaigns. As they too enjoy all the luxuries like celebs, why is this bias only towards celebs? Also, the politicians who don't donate during havocs, spend lavishly for election campaigns.