The religion that taught the world to prohibit murder was absurdly accused of cold-blooded murder during the Middle Ages. Same holds true today.
The most astonishing part of the medieval blood libel against the Jews — that they deliberately murdered Christian children in order to use their blood for baking matzah — was not the hatred. It was the absurdity.
The Torah prohibits murder. The Torah prohibits the consumption of blood. The Torah disqualifies matzah if it is made of anything but flour and water. These are all easily accessible teachings. These are all easily observed Jewish practices. No murder. No blood. No complex matzah.