Anna O'Donoghue: Social media can strengthen voices in activism

The social media post shared by over 500,000 people after Ashling Murphy's murder.
Ever since Cathal Crotty walked free from a court with a suspended sentence after he beat Natasha O’Brien unconscious in a random street attack, and boasted about it afterward on social media, people have turned to that very medium to try and make sense of it.
Tap after tap, post after post, reshare after reshare: “We stand with Natasha.” “The judicial system is misogynistic.” “Where is the justice?”