Have I been excluded from events for political color of my songs
Yes
Southern Maryland Celtic Festival would not let me even post information about the existence of a web page of a collection of Orange Songs of the tradition of the island of Ireland.

They cited ban on politics.

I went right from my scolding to listen to three groups on three stages at the same festival who openly and without complaint were allowed to sing Republican songs of that tradition of the isle of Ireland

Never actually been tossed out I don't think. I am tempted to wear a conservative political button something like vote republican and see how pleasant folkies would be to me but have not wished to spoil friendships by exercising my freedom.

Conrad