There is far worse going on in the world than someone expressing an opinion.
Indeed. McGuinness was a peace maker during Duffy's life not the evil terrorist older people know him as.
The atrocities he carried out or had a part in could have been carried out or ordered by any violent extremist, he is no war hero. However, the peace he helped build made him unique. There was no one else capable of coming to the table to talk to the government and bring the IRA with them. He got the IRA to decommission, that's probably harder than banning guns in America.
Nice to see Duffy sticking up for his opinion despite some obvious ignorance or indifference about the evil McGuinness committed before he was born. That attitude makes him the amazing player he is.