As usual a misleading headline by Fox News.
You failed to mention that respondents could agree with several statements at the same time. 63% also thought it was an attempt to overturn elections and 55% an insurrection.
From your linked article:
"For starters, "a protest that went too far" was the overwhelming favorite of the 2,046 Americans who were polled with 76% agreeing with that characterization of Jan. 6. The second most popular result was "trying to overturn the election and keep Donald Trump in power" with 63%. Both of those options were omitted in the graphic bolstered by CBS. Meanwhile, "an insurrection," which came at a distant third with 55% of Americans was kept in the graphic among the others which polled even less popular. "