Complex sentence: At this point his public speeches took on a distinctly leftist slant by condemning social and economic inequality in Cuba; in contrast, his former public criticisms had centered on condemning corruption and U.S. imperialism.
Split into simpler sentences: At this point his public speeches took on a distinctly leftist slant by condemning social and economic inequality in Cuba. In contrast, his former public criticisms had centered on condemning corruption and U.S. imperialism.