As defined by the Slang Dictionary,

the Swamp is a political term that refers to the corruption in Washington D.C. – the corruption that infected the entire country; the corruption that became a rallying cry for Donald Trump and his supporters during the final weeks of the 2016 U.S. presidential election.

From the news media:

The latest Census Bureau report identified five counties in Washington, D.C. as the richest counties in the US. According to the American Community Survey's new five-year estimates (2012-2016), these five richest counties in the country are: Loudoun County, Va., where the median household income was $125,672; Falls Church City, Va., where it was $115,244; Fairfax County, Va., where it was $114,329; Howard County, Md., where it was $113,800; and Arlington County, Va., where it was $108,706.

The nationwide median household income in 2012-2016, according to the Census Bureau, was $55,322. That means that the income in the nation's four richest counties—Loudoun, Falls Church City, Fairfax County, and Howard County—were all more than double the national median. In reality, it is much more “than double” if one takes into consideration the better medical insurance, longer paid vacations, practical impossibility to be fired, and much more.

This Swamp has swamped both political parties, all branches of the government, most of the news media, many social organization, and the enormous legal community. The Swamp even corrupted the religious community – the so-called liberal Christians and liberal Jews have become members of the Swamp.

The Swamp have successfully redistributed the national wealth from us, the Judeo-Christian majority who are creating the national wealth, to them the Swamp. The weaponry of this redistribution are the corruptive laws and regulations made by the government and supported by the brainwashing labors of the establishment news media.

And here comes the Judeo-Christian majority, who were silent for a long time, who elected Donald Trump to be their President and to “drain the Swamp”.

The Swamp-ers are smart people – they immediately realized that US President Donald Trump and his devoted Judeo-Christian associates are here to stop the revered redistribution of wealth. Donald Trump and his devoted associates are stopping the redistribution of national wealth from us – those who are creating the national wealth – to them, the Swamp-ers who are “robbing” us. It looks like Donald Trump and his devoted associates want to reduce the power of the Swamp by reducing the size of the government and eliminating all economic incentives to work for the government – the work in the private sector has to be equally rewarding.