Media Matters, the liberal activist group that wages a rhetorical war against Fox News Channel and others in the conservative press, will announce on Wednesday the receipt of a $1 million donation from the philanthropist George Soros. In a statement obtained by The Caucus, the organization says it plans to use the money to intensify its efforts to hold the Fox host Glenn Beck and others on the cable news channel accountable for their reporting. “Fox has transformed itself into a 24-7 G.O.P. attack machine, dividing Americans through fear-mongering and falsehoods and undermining the legitimacy of our government for partisan...