When you have a room full of stars and starlets, there is bound to be some shade. Twitter has been alight with disgruntled fans and celebrities, but for a few different reasons.

Jason Bateman. Not even a golf clap.

With the controversy surrounding "American Sniper," perhaps he was standing up (or sitting down) for a reason. Or maybe his hands were tired? Either way, it was noticed when Jason Bateman did not clap for the film based on Navy SEAL Chris Kyle's true-to-life novel "American Sniper: The Autobiography of the Most Lethal Sniper in US Military History."

See "Related Articles" below for coverage of the debate on "American Sniper" - hero or mass murderer?

Joan Rivers snubbed?

Joan Rivers was omitted from the "In Memoriam" piece. One Twitter user suggested it was to make more time for Neil Patrick Harris to hang out in his skivvies, but Rivers and the omitted others were the talk of Twitter Town:

Taylor Negron died in 2015, so Negron wouldn't be eligible for the honor until the following year, as this Tweep suggests:

However, Philip Seymour Hoffman, who died Feb. 2, 2014, was not included this year because he was included last year (with Shirley Temple). Twitter forgot:

...but Robin Williams' death was still fresh in the minds of some Twitter users:

Still, the most obvious snub was Rivers:

During the Oscars pre-show, the "Fashion Police" gang hosted the red carpet for the first time without Rivers. Her daughter, Melissa Rivers, honored her mother's memory with a tribute to her longevity, sass and that question, "Who are you wearing?"

"It's hard to believe it was 20 years ago that my mother and I stood on this very red carpet for the first time," Melissa said in the video. "My mom asked questions that nobody else dared to ask."

"There were so many great moments with so many of the greats," Melissa continued. "And I think the reason everybody loved talking to my mother, just like the people who sit in these bleachers, was because she was a true fan."

What do we want? Equality! When do we want it? Now!

... But who do we want it for?

Multiple hashtags on social media sparked debate about equality. #OscarsSoWhite addressed the under-representation of black nominees. #AskHerMore related to questions perceived as sexist posed to actresses vs. actors (when was the last time you heard a male actor asked "So, how do you balance your kids and your career?")

A big moment occurred when Patricia Arquette got up on stage to accept her award for Best Supporting Actress in "Boyhood" (you get the irony, right?) - Arquette used the time to call attention to gender inequality and income equality.

"To every woman who gave birth to every taxpayer and citizen of this nation, we have fought for everybody else's equal rights," Arquette added after her thank-yous were over. "It's our time to have wage equality once and for all, and equal rights for women in the United States of America."

Women who haven't given birth to a taxpayer... er, baby... haven't piped up as much as those who noticed that the champion of equality is a white woman:

Arquette's comments were received with applause and whoops from the audience... and a standing-o from one Ms. Meryl Streep: