The backlash to al-Jazeera has begun: Accuracy in Media, the conservative watchdog group, has labeled the network a "Homeland Security threat" and is calling for a congressional probe into the "controversial operations of foreign propaganda channel" following its acquisition of Current TV this week.

Meanwhile, the Anti-Defamation League has announced it has ongoing concerns about the Qatari-owned network, due to "a troubling record" of giving "virulent anti-Israel and even anti-Semitic extremists access to its airwaves."

Al-Jazeera has long faced charges of anti-Americanism and even anti-Semitism from conservatives and pro-Israel groups, but it's English-language programming has received praise from politicians on both sides of the spectrum, especially during its coverage of the Arab Spring.

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