For actress Sofia Castro, voicing her opinion on the 43 missing Ayotzinapa students can be complicated.

As the daughter of Mexican first lady Angelica Rivera and José Alberto Castro, she is in the public eye, and the opinions she voices on what goes on in Mexico is likely more difficult because her stepfather is Enrique Peña Nieto, the president of Mexico.

On the 2014 Premios Arlequin red carpet, Castro did not want to talk about the missing students who have been reported as dead.

"I don't think this is the time to talk about this," she said. "All of Mexico is in mourning because of what's happened, but I don't think right now is the moment. Right now, we are here to enjoy ourselves and for me to get my award."

People have taken to Twitter to express their disappointment with Castro.

"How embarrassing to be young and not speak up," said one user.

Another one was surprised that Castro didn't show more outrage.

"I actually cringed when @sofia_96 castro said, 'it's not time to talk, we're here to have fun,'" the tweet said. "This is your country I don't get it."

Castro's cousin, singer Ximena Sariñana, has spoken up against the government.

"In between so much confusion, a few things are clear: too many homicides, not enough responses and hurtful truths for Mexico," she said.

She followed it by another tweet.

"How do we save the credibility of our authorities? Who are we left to trust in?" she said. "What horror..."

Other celebrities, such as Gael Garcia Bernal and Eugenio Derbez, have also spoken out.

Bernal, for the most part, has been retweeting messages that call out the government, and at times he stands up for protesters.

One of the messages he retweeted said, "What does a country that buries so many dead harvest?"

Derbez said that the arrest of the Iguala mayor, who reportedly turned the students over to a gang, and his wife is a step in the right direction.

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