There is a distinction between two kinds of rights held by copyright owners: economic rights and moral rights. Any Canadian politicians seeking to use a musical work at a public event should be aware of the legal issues that may arise when a work is directly linked with a political party or message.
The NMC should enhance the musical landscape in Calgary by becoming a focal point for activity, and create a bridge to the music industry across the country. It will be a hub for community events and activities in Calgary's East Village, a key part of that area's redevelopment. It will spur cultural tourism and likely be a catalyst for employment in commercial music and related sectors.
The problem with this particular group of guys isn't that they invoked the Vietnam War at all, it's that they did it for a really shitty reason. To suggest that any subject matter be restricted to any artist is a low-key expression of censorship and should be resisted. Politically sensitive, controversial imagery needs to be available; to declare it off-limits infantilizes the role of music and art, and our expectations from it.
Growing up in Rockland County, New York, Bishop Nehru stood out in high school. He dressed differently than most of his peers, and listened to different music. He had different priorities. Although at times being the odd man out could feel alienating, this experience turned out to be what author Malcolm Gladwell calls a desirable difficulty.