Sir, this is how it happened: Babri Masjid was attacked in UP. THEN Muslims rioted in Mumbai by attacking Hindus. THEN Hindus retaliated violently. THEN Muslims exploded bombs. Yes, there is cause and effect. But what was the cause of Hindus attacking Babri Masjid? If you do cause and effect analysis, you have to draw the Start-line way, way back. You cannot draw it from 1990 at your convenience. You need to go a long way back... centuries back.