Should scenes of masked gunmen firing shots over coffins be acceptable in 2015?

The police are investigating the firing of shots over the coffin of veteran republican Peggy O'Hara in Derry last night.The mother of INLA hunger striker Patsy O'Hara was given full Republican honours as her remains were brought to her home. Reports say traffic was brought to a standstill as a colour party of four women and one man flanked the hearse. Shots were then fired by a man with a rifle. In 1981 her son was one of 10 men who died on hunger strike in the Maze prison. Are scenes of masked gunmen firing shots over coffins be acceptable in 2015? #BBCNolan