You have set yourself a rather difficult task, IMO.
I mean, there are dozens of people and groups accused by the likes of CAIR as being anti-Islamic. But, most folks who know anything about CAIR know enough to discount them as a source. The accusations of such groups fly fast & furious, but rarely stick, due to the common sense of most folks.
SANE's website is currently under construction and I can't delve into their content to make a determination for that particular group, so no joy, there.
I suspect you'll have to be content to write about groups that hate just about everybody: KKK, some of the various NAZI groups (including Illinois NAZIs). That won't be very interesting, because there are so few groups & members and they have about zero influence. Bring your banjo and your fine-toothed comb to get anything substantive.
Another source may be explicitly athiest groups that hate all religions. Perhaps there is one out there that takes a shine to Islam and goes after it hammer & tongs.
Heck, I can see why you are stumped. I suspect your essay may be exceedingly short and end with the words, "Never mind..."
