Lajpat Nagar and Lajpat Nagar Central Market in New Delhi, Lajpat Rai Market in Chandani Chowk, Delhi; Lala Lajpat Rai Hall of Residence at Indian Institutes of Technology (IIT) in Kanpur and Kharagpur; as well as the Lala Lajpat Rai Institute of Engineering and Technology(LLRIET), Moga, are named in his honor.
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Joshi got involved in labour issues and started the All India Trade Union Congress in 1921 along with Lala Lajpat Rai.
Fearing more trouble, Mr King, Commissioner Lahore, handed over the keys of Nankana Sahib to Shiromani Committee and arrested Mahant Narayan Das and his Pashtun mercenaries and charged them with murder, but only Mahant Narayan das and some of the mercenaries were sentenced to death.Lala Lajpat Rai was active advisor of Mahant Narain Das & even defened him in the court.Finally Mahant was let off.After independence he was given protection by Government Of India.He was kept under