Complex sentence: Liberal democracies with statist conceptions of citizenship permit, indeed facilitate, nationalist or ethnic organisation and mobilisation; and ethnic contests for state power become eminently ~ thinkable'and ~ workable' within liberal democratic or open institutions.
Split into simpler sentences: Liberal democracies with statist conceptions of citizenship permit, and indeed facilitate, nationalist or ethnic organisation and mobilisation. Ethnic contests for state power become eminently thinkable and workable within liberal democratic or open institutions.