and I was under impression that democracy is a better form of gov and is bound to filters all such corrupt crooks.
You do not realise that Musharraf left many corrupt crooks and now they are back to do what they are best, loot and plunder. For instance, biggest mistake by Musharraf was in 2000 when he pardoned the biggest thug born in Pakistan, aka 'Ganja Thug'. Then in 2004, Musharraf left Mr 10 percent Monchoon wala. In the end, Musharraf under pressure from all fronts, especially thug liars of Media, thugs in Judiciary, Bhangra dancers of law society, Corrupt-cum-Civil Society, corrupt teams of NGOS, human bombs of Shaitanic forces, Evil Mullah FM Radio, and Burkha-posh Maulana Evil Ninja of danda bardar Ninjees ... let both these thugs he pardoned along with 'Thuggan BB' to come back to Pakistan. Now we are in Mess.