Complex sentence: The "Barnyard Battle" incident did not reflect wider anti-Mickey sentiment in Germany in 1930; however, after Adolf Hitler came to power several years later, the Nazi regime unambiguously propagandized against Disney.
Split into simpler sentences: The "Barnyard Battle" incident did not reflect wider anti-Mickey sentiment in Germany in 1930. But after coming to power several years later, the later Nazi regime unambiguously propagandized against Disney.