In this week’s most shared tweets: A despicable terror attack rocked London yet again as a man drove his car into a crowd near a mosque in Finsbury Park; three years on, India’s PM Modi has not delivered on his promises and the country faces mob lynchings and government crackdowns; the world marked #RefugeeDay and HRW did a social media takeover highlighting individual stories and the reasons people flee home to begin with; and some good news as New York banned child marriage (27 more states to go).