Did Congress shield Sajjan Kumar for 34 years?

Thirty-four years after the gruesome killings, the Delhi High Court on Monday convicted Congress leader Sajjan Kumar in an anti-Sikh riot case of 1984 in Delhi and sentenced him to imprisonment for life, holding that the violence was a "crime against humanity" engineered by politicians with assistance from police.

Setting aside the acquittal of Sajjan Kumar, the court convicted him and five others saying that the "criminals" had escaped prosecution and punishment for over two decades.

But is this justice, when Congress is surprisingly quiet, silent about what they are going to do against him now and why didn't they act for so long?