Why is "Attempts to overturn the 2020 United States presidential election" trending?

Wikipedia Overview

After Democratic nominee Joe Biden won the 2020 United States presidential election, Republican nominee and then-incumbent president Donald Trump pursued an unprecedented effort to overturn the election, with support from his campaign, proxies, political allies, and many of his supporters. These efforts culminated in the January 6 Capitol attack, described by multiple sources as a self-coup d'état attempt. Trump and his allies used the "big lie" propaganda technique to promote false claims and conspiracy theories asserting that the election was stolen by means of rigged voting machines, electoral fraud and an international conspiracy. Trump pressed Department of Justice leaders to challenge the results and publicly state the election was corrupt. The attorney general, director of national intelligence, director of the cybersecurity and infrastructure security agency, state and federal judges, election officials, and state governors dismissed these claims.