HARVARD LAW — The successful mainstreaming of ideas and tactics that undermine institutions and values in American and Western European politics over the last decade has left many deeply worried that democracy is losing the battle against the global forces of autocracy. Not so, said activist Kenneth Roth, former executive director of Human Rights Watch, during a talk last Thursday at Harvard Law School with Gerald L. Neuman, J. Sinclair Armstrong Professor of International, Foreign and Comparative Law.