I like visiting art museums. State and local art museums are similar but where they differ is the collection itself. 
What is different about the collections found at state and local museums? 
They can be public or private, which brings into question the ownership of the collection. 
What type does each particular museum specialize in?
Sometimes a public will feature more local art besides paintings.  Private will showcase more of performance art.
That is very interesting. What type performance art can be found at a private museum?
It could be live where they're actors, or it could be absent in the form of media. 
I would love to see performance art. Can you tell me more about this type of art form?
It can happen anywhere: not just in art museums. Mark McGowan is a good example. 
I'm not familiar with Mark McGowan. What is he best known for?