You need to read up on how the British treated the Irish like slaves for hundreds of years and the Easter Rebellion was the day the Irish fought for freedom from British tyranny .
The Irish finally fought back against hundreds of years horrendous abuse by Great Britain .
The Irishmen was not a leftist .He was reminding all the Brits that it was fight for freedom and the clown from Canada showed he was a Brit not a Canadian !
First the Irish terrorists got their guns from the Kaiser during War War I. Then they had the support of the gangsters in Boston. Finally, in the 1960s, the Official IRA was Marxist.