A joint demonstration in Trafalgar Square against the Irish
coercion laws, held by Socialists and Irish nationalists, becomes
known as 'Bloody Sunday' after clashes with police lead to three
deaths and hundreds more protestors needing to be treated in
hospital.
Citation:
Editors. "'Bloody Sunday' at Socialist meeting in Trafalgar Square".
The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=18979, accessed 21 May 2013.]