Muslim groups like those cited in this thread, while expressing regret/outrage over the Paris attacks and/or the Charlie Hebdo murders, typically avoid specifically denouncing the organizations sponsoring terrorism.
For instance, CAIR’s statement does not say anything bad about Islamic State, which fits in with its history.
*"CAIR incites, funds, and does much more vis-à-vis terrorism:
It apologizes for terrorist groups: Challenged repeatedly to denounce Hamas and Hezbollah as terrorist groups, CAIR denounces the acts of violence but not their sponsors. It is connected to Hamas: Hamas, designated a terrorist organization by the U.S. and many other governments, indirectly created CAIR and the two groups remain tight.
Examples: In 1994, CAIR head Nihad Awad publicly declared his support for Hamas; the Holy Land Foundation (HLF), a Hamas front group, contributed $5,000 to CAIR; in turn, CAIR exploited the 9/11 attacks to raise money for HLF; and, this past August, demonstrators at a CAIR-sponsored rally in Florida proclaimed “We are Hamas!”
It settled a lawsuit: CAIR initiated a libel lawsuit in 2004 over five statements by a group called Anti-CAIR. But two years later, CAIR settled the suit with prejudice (meaning that it cannot be reopened), implicitly acknowledging the accuracy of Anti-CAIR’s assertions, which included: “CAIR is a terrorist supporting front organization that is partially funded by terrorists”; “CAIR . . . is supported by terrorist supporting individuals, groups and countries”; “CAIR has proven links to, and was founded by, Islamic terrorists”; and “CAIR actively supports terrorists and terrorist supporting groups and nations.” It includes individuals accused of terrorism: At least seven board members or staff at CAIR have been arrested, denied entry to the U.S., or were indicted on or pled guilty to (or were convicted of) terrorist charges: Siraj Wahhaj, Bassem Khafagi, Randall (“Ismail”) Royer, Ghassan Elashi, Rabih Haddad, Muthanna Al-Hanooti, and Nabil Sadoun.
It is in trouble with the law: Federal prosecutors in 2007 named CAIR (along with two other Islamic organizations) as “unindicted co-conspirators and/or joint venturers” in a criminal conspiracy to support Hamas financially. In 2008, the FBI ended contacts with CAIR because of concern about its continuing terrorist ties."*