independentista

noun, plural in·de·pen·den·tis·tas [een-de-pen-den-tees-tahs] /ˌin dɛˌpɛn dɛnˈtis tɑs/. Spanish.

1. (especially in Latin America) a person who supports or works toward political independence, especially one supporting radical changes in an existing government or from an existing system of government.