Europeans like to brutally slaughter animals too.
However, Muslims belong to the only major, supposedly monotheistic, religion that still demands you either submit to its will or else.
Emigres who are Sikhs may request that their adoptive country allow their children be allowed to carry a ceremonial kirpan to school, or that they be granted the right to wear turbans, and not cut their beards, even in jobs where these basic rules are obligatory.
There is even a small minority that drive around with "Free Khalistan" bumper stickers on their cars, or contribute to paramilitary organizations indirectly.
There is a minority of Tamil exiles who support radical separatist/terrorist groups like the ETTE.
However, as objectionable are these things are, they are the exceptions to the rule, and are in no way comparable to the absolute, unyielding compulsion imposed by Islamic immigrants.
The second and third generation Muslims that support the Islamic equivalents of the Tamil Tigers and the International Sikh Youth Foundation are not an insignificant minority.
The concessions that they demand of our culture are not in the same vein as the debatable requests of civil authorities made by Sikhs, Hindus, and other religious minorities.
But most importantly, they do not assimilate to American culture-or European culture-like their non-Islamic counterparts.