"The Basic Laws of Human Stupidity" (1976)
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The second essay, "The Basic Laws of Human Stupidity" ("Le leggi fondamentali della stupidità umana", 1976),[3][4][5] explores the controversial subject of stupidity.

These are Cipolla's five fundamental laws of stupidity:

Always and inevitably, everyone underestimates the number of stupid individuals in circulation.
The probability that a certain person (will) be stupid is independent of any other characteristic of that person.
A stupid person is a person who causes losses to another person or to a group of persons while himself deriving no gain and even possibly incurring losses.
Non-stupid people always underestimate the damaging power of stupid individuals. In particular, non-stupid people constantly forget that at all times and places, and under any circumstances, to deal and/or associate with stupid people always turns out to be a costly mistake.
A stupid person is the most dangerous type of person.
Corollary: a stupid person is more dangerous than a pillager.

By creating a graph of Cipolla's two factors, we obtain four groups of people.

Helpless people contribute to society but are taken advantage of by it; Intelligent people contribute to society and leverage their contributions into personal benefits; Stupid people are counterproductive to both their and others' interests; Bandits pursue their own self-interest even when this poses a net detriment to societal welfare. An additional category of ineffectual people either exists in its own right or can be considered to be in the center of the graph.
As is evident from the third law, Cipolla identifies two factors to consider when exploring human behavior:

Benefits and losses that individuals cause to themselves.
Benefits and losses that individuals cause to others.
Cipolla further refines his definition of "bandits" and "naïve people" by noting that members of these groups can either add to or detract from the general welfare, depending on the relative gains (or losses) that they cause themselves and society. A bandit may enrich himself more or less than he impoverishes society, and a naïve person may enrich society more or less than he impoverishes himself and/or allows himself to be impoverished.

Graphically, this idea is represented by a line of slope -1, which bisects the second and fourth quadrants and intersects the y-axis at the origin. The naive people to the left of this line are thus "semi-stupid" because their conduct creates/allows a net drain of societal welfare; some bandits may fit this description as well, although many bandits such as sociopaths, psychopaths, and non-pathological "jerks" and amoralists may act with full knowledge of the net negative consequences to a society that they neither identify with nor care about.
[en.m.wikipedia.org]

You mean, like Repugs in Congress?