By Jennifer Harper INSIDE THE BELTWAY STRONG BREW The term "tea-bagger" is like uttering the "n" word, some say. Though he aspires to promote civility, evidence has surfaced that President Obama has added "tea-bagger" to his public lexicon, though it's considered a cheap and tawdry insult by "tea party" activists. Watchdogs at Americans for Tax Reform (ATR) barked when they saw the proof, tucked in a sneak peak of Newsweek columnist Jonathan Alter's new book, "The Promise: President Obama, Year One," to be released May 18. Indeed, it appears the president joined certain partisan critics and the liberal media, and took the tea-bag plunge. "This remark is the equivalent of using the 'n' word. It shows contempt for middle America, expressed knowingly, contemptuously, on purpose, and with a smirk. It is indefensible to use this word. The president knows what it means, and his people know what it means. The public thought we reached a new low of incivility during the Clinton administration. Well, the Obama administration has just outdone them," ATR president Grover Norquist tells Inside the Beltway. There is not always parity in these situations. There were outraged calls for Rep. Dan Burton's resignation and massive press coverage after the Indiana Republican called President Clinton a "scumbag" during the Monica Lewinsky matter in 1998. The offending passage that started the tea-bagger shuffle? Mr. Alter wrote, "Obama said that the unanimous House vote against the Recovery Act 'set the tenor for the whole year': 'That helped to create the tea-baggers and empowered that whole wing of the Republican Party to where it now controls the agenda for the Republicans.' " Mr. Obama himself was recently ruing the contentious state of politics, noting Saturday at a college commencement speech, "We've got politicians calling each other all sorts of unflattering names. Pundits and talking heads shout at each other. The media tends to play up every hint of conflict, because it makes for a sexier story."