Explanation:

During the Simon Commission Lahore visit Lala Lajpat Rai freedom fighter was assassinated.
On October 30, 1928, the Simon Commission arrived in Lahore where, as with the rest of the country, its arrival was met with massive amounts of protesters and black flags. The Lahore protest was led by Indian nationalist Lala Lajpat Rai, who had moved a resolution against the Commission in the Legislative Assembly of Punjab in February 1928. In order to make way for the Commission, the local police force began beating protestors with their sticks. The police were particularly brutal towards Lala Lajpat Rai, who died later on November 17, 1928.