Had an argument about a music artist with girlfriend, not sure how to move on, any advice?

So had an argument with my girlfriend over a music artist recently, we are booked to go see one of her favourite music artists as she likes his music in August.

However the artist recently at gigs has started waving flags around and talking about politics a lot recently. I can't stand what the guy is about recently as a lot of what he is saying insults certain classes/groups of people including me and my family, I'm not willing to go watch an artist or support someone who slags off my family in any way shape and form.

I explained to my girlfriend why I wouldn't go watch him because of it or support him. I'm not sure if I'm in the wrong on this one or not... she is willing to let me go alone and ignore him playing at the concert. On the other hand she isn't fine with that, says she will just ignore the political chants and flags, and listen to him.

I guess I was hoping my girlfriend would stand with me as its something I stand strong on, especially if family is insulted. It wasn't like I said to her don't listen to his music at all, just not to support the guy during his political talks and in person.

I feel like she's chosen to support a guy, slagging off my family and myself... I'm not sure if I've taken it wrong, but that's what it feels like and I don't feel supported.

Am I in the wrong for asking to support me?

Or should I not be upset?

Any advice?
Had an argument about a music artist with girlfriend, not sure how to move on, any advice?
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