Harsh Mander made many significant interventions in India’s highest courts. For instance,

• decriminalization of beggary after nearly a hundred years
• reopening of over 2000 criminal cases related to the Gujarat carnage of 2002
• making homeless shelters a legal duty for all state governments
• petitions against the detention of undocumented people deemed as foreigners in Assam
• pertition for legal action afainst perpetrators of hate speech resulting in sectarian violence in 2020
• petition for food and livelihood security od migrants during the Covid-19 pandemic
• petition for humane treatment of persons with mental illness in mental hospitals