Complex sentence: Kosher slaughter has historically attracted criticism from non-Jews as allegedly being inhumane and unsanitary, in part as an antisemitic canard that eating ritually slaughtered meat caused degeneration, and in part out of economic motivation to remove Jews from the meat industry.
Split into simpler sentences: Kosher slaughter has historically attracted criticism from non-Jews as allegedly being inhumane and unsanitary,. In some instances, criticism of kosher slaughtering may stem out of economic motivation to remove Jews from the meat industry.