My wife left me over McDonalds

My wife and I went to pick up my sister from work and my sister wanted some food and she said McDonald’s, my wife suggested Wendy’s because supposedly McDonalds feeds Israel soldiers. But my sister is 30 years old and can do what she wants so she said nah McDonald’s is fine plus we were right by it. My wife proceeds to lecture me then show my sister and I pictures of the bombings of babies in Palestine and followed it by saying “your sister shouldn’t be eating this crap anyway”. I felt so embarrassed and I was mad that she was ridiculing me for my sisters actions. My wife still eats at chick fil a! I just feel as if she’s being hypocrite. We got home and my wife grabbed all of her stuff and left, not telling me where she was going but continued to cry and yell at me about how I’m a terrible person for enabling my sister to support genocide. Am I missing something? Am I wrong? Should I have done or said more to my sister and her choice??