Students at Marjory Stoneman Douglas High School Wednesday returned to a more secure campus as they began their first new school year since a gunman killed 17 people in the freshman building.

Prosecutors have released video of the police interrogation of Parkland school shooting suspect Nikolas Cruz in which he claims a demonic voice in his head urged him to do violence.

Cruz described the voice as a male, about his age, and said the only person he ever told about it was his brother.

A screengrab obtained by Global News shows a tweet from an account belonging to an Alberta government employee saying, "Cuckservatives are the best. So fragile."

Students who escaped the deadly school shooting in Florida focused their anger Sunday at U.S. President Donald Trump, contending that his response to the attack has been needlessly divisive.