The graphic compares the current Congress with the hypothesized proportional or representative Congress in terms of political affiliation, gender, race and religion. There are only two Independents in the current Congress, and both are in the Senate, namely, Joe Lieberman and Bernie Sanders. The thought experiment estimates conservatively that there would be 81 Independents in the House and Senate if the legislature were reflective of political affiliations in the country as a whole rather than just the Democratic and Republican parties. Unfortunately, the graphic does not also compare the great disparity in wealth between the Congress and the people. But the fact is noted in the corresponding post:
One thing not noted on this infographic is that, besides being nothing like America in terms of race, sex, or religion, our senators and representatives are also wholly different from most Americans in terms of wealth. We've said this before, but it bears repeating: The average American's net worth is $96,000. But the average Senator's net worth? $13.4 million. For House members that sum drops to "just" $5 million. Does this represent your community?