Roseanne Barr has gone on another Twitter rant. This time, the actress and comedian targeted Beyonce and her husband Jay-Z.

It all started on Friday, when Barr, 59, took to Twitter to react to the death of singer Etta James. Barr followed up her Rest in Peace post with some harsh words for Beyonce and even President Barack Obama.

I lost ALL respect for Obama when he dissed Etta James in favor of Beyonce. No respect for women at all, I thought-Etta was a hero 2 women . . . I have not listened to anything beyonce or jay z has said or recorded since they did that to Etta. Their arrogance was disgusting, Barr wrote, referring to Beyonce's performance at the president's inauguration ceremony in 2009.

Barr, who is known to engage in animated conversations with her fans and critics on Twitter, went on to also talk about her intentions in the White House (back in August 2011, she announced on The Tonight Show with Jay Leno to announce her candidacy for president in the 2012 elections).

Between responding to attacks from Beyonce's fans to her rant on politics, Barr also highlighted -- of all things -- the spelling mistakes of some tweets, only to make a mistake of her own.

sanjaya gupte is a much better singer than beyonce-and his hair looks real! according to Barr.

She was actually referring to American Idol season six contestant Sanjaya Malakar, who became a national and viral sensation despite scoring poorly with judges. Barr's name mix-up also came by way of Dr. Sanjay Gupta, a CNN health analyst.

Dozens of responses to Beyonce's fans, more political talk, and two days later, Barr wrote the following:

I sincerely want2 apologize 4 the rude comments I made2 twitters defending the fabulously talented Beyonce. I reverted 2 stand up slams, she wrote.

But was it really an apology? On Monday, Barr revisited her weekend topics.

I will ask Queen Bey 2 sing when I'm sworn in as POTUS. I want her to sing the song, 'People' or perhaps, 'Respect'-she will do a great job . . . I will ask Bey to sing Barbra's 'people who need people,' Barr wrote.

This is not the only headline Barr has made this week. On Wednesday, NBC announced that it had picked up Downwardly Mobile, a new comedy with Barr starring as the head of a mobile-home park. Barr's previous gig was on the Lifetime reality show, Roseanne's Nuts, which was canceled after one season due to low ratings.

For more of Roseanne Barr's latest rant on Beyonce, The Green Party and Obama's State of the Union, visit Barr's Twitter page.