One important thing to remember is that Muslims detest pork because they believe pigs are filthy animals. Some of them simply refuse to eat it, while others won't even touch pigs at all, nor any of their by-products. To them, eating or touching a pig, its meat, its blood, etc., is to be instantly barred from paradise and doomed to hell.
Just before World War I, there were a number of terrorist attacks against the United States and it's interests by, you guessed it, Muslim extremists.
So General Pershing captured 50 of the terrorists and had them tied to posts execution style. He then had his men bring in two pigs and slaughter them in front of the, now horrified, terrorists.
The soldiers then soaked their bullets in pigs blood, and proceeded to execute 49 of the terrorists by firing squad.
The soldiers then dug a big hole, dumped in the terrorist's bodies and covered them in pig blood, entrails, etc.
They let the 50th man go. And for about the next 42 years, there was not a single attack by a muslim fanatic anywhere in the world.
How was it possible to audit all Muslim behavior at all points of the globe in WWI times?
Sounds far more likely that (at best) they turned their fury to places that the reported Western world was not caring about. What has hidden has not passed out of existence.