NASHVILLE, Tenn. — The surprise collaboration of Beyoncé and the Dixie Chicks at the Country Music Association Awards was still rocking the music world on Thursday, but not all were impressed by the electric performance — and some country fans unleashed their anger on social media.

Since the show aired Wednesday night, the CMA’s Facebook page and other social media accounts have been filled with comments about the performance of Beyonce’s country-flavored song “Daddy Lessons,” which generated perhaps the most attention during the show’s big night, as the CMAs celebrated the awards’ 50th year.

The Beyonce-Dixie Chicks performance brought plenty of attention and rave reviews, and had many gushing. Reese Witherspoon tweeted, “Loving this!” during the performance.

But some were outraged Beyoncé and the Dixie Chicks, who have been estranged from the country music world since their insult of then-President George Bush in 2003, even were allowed to perform. Some questioned the Dixie Chicks patriotism, while others claimed that Beyoncé is anti-police because she has addressed police brutality in her music videos.

Still others complained that Beyoncé was not a country artist, although the CMAs routinely feature non-country artists in collaborations, including the highly praised performance at last year’s show between Justin Timberlake and Chris Stapleton.

Some Beyoncé fans even accused the CMAs of taking down references to the performance on social media; the CMA Twitter page had only a brief reference to it.