What is Islam? The obvious dictionary definition answer is that it's a religion, but legally speaking it actually enjoys all of the advantages of race, religion and culture with none of the disadvantages.
Islam is a religion when mandating that employers accommodate the hijab, but when it comes time to bring it into the schools, places that are legally hostile to religion, American students are taught about Islam, visit mosques and even wear burkas and recite Islamic prayers to learn about another culture. Criticism of Islam is denounced as racist even though the one thing that Islam clearly isn't is a race.
Islamist organizations have figured out how lock in every advantage of race, religion and culture, while expeditiously shifting from one to the other to avoid any of the disadvantages.