Complex sentence: After he sees his replacement's, Roger Debris, insulting performance of Hitler, Liebkind becomes outraged and nearly kills producers Bloom and Bialystock, but the two convince him instead to help destroy the theater with TNT.
Split into simpler sentences: After he sees the insulting performance given by his replacement-Roger Debris-Liebkind becomes outraged and nearly kills producers Bloom and Bialystock. The two convince him instead to help to destroy the theater with TNT.