Social media has changed how we communicate, how we consume the news, and most recently, how we tell our most crucial stories. Citizen journalism has now advanced to the next level with live streaming.

Last week, Philando Castile was shot and killed by a police officer while reaching for his license and registration in Falcon Heights, Minnesota. His fiancée, Diamond Reynolds, seated next to him in the car, reached for her phone and began live streaming it on Facebook. The footage starts right after the shots were fired and captured the graphic aftermath.

Following the event, Reynolds held a news coverage that was also live streamed where she shed more light on the incident and her actions.

"I wanted to put it on Facebook and go viral so that the people could see. I wanted the people to determine who was right and who was wrong," Reynolds said. "I didn't do it for pity. I didn't do it for fame."

Posted July 6, Reynolds' live stream has by watched by 5.7 million and shared over 317,000 times as of July 13. The video, which showed a Castile's death to a live audience, has created some controversy for Facebook.

Shortly after being posted, the video was temporarily removed from Facebook. In a statement, Facebook said, "We're very sorry that the video was inaccessible. It was down to a technical glitch and restored as soon as we were able to investigate." But not everyone believes that explanation.

Regardless, Reynolds' video reappeared on Facebook shortly after being removed. This time, the video contained a warning reading, "Videos that contain graphic content can shock, offend and upset. Are you sure you want to see this?"

The day after Reynolds' video, another major news event — the Dallas police shooting — was also streamed on Facebook Live.

The following day, July 8, Facebook announced Community Standards and guidelines for Facebook Live.

Facebook acknowledges "live video on Facebook is a new and growing format." As it stands, anyone with a Facebook account can become live streaming. It's incredibly easy. On the Facebook iOS or Android app, you click "What's on your mind?" then select "live video" from the dropdown menu and hit "go live."

The tricky part comes after you begin live streaming.

If a single person reports your video, it is quickly reviewed by Facebook's Community Standards team. If your live stream violates those Community Standards, Facebook will remove it.

Facebook qualifies that "live video can be a powerful tool in a crisis — to document events or ask for help." Violent videos that report on events taking place in the real world, and focused on capturing the moment, will be left up. In that case, a graphic warning — such as the one on Reynolds' video — may be published. Facebook will remove videos that condone or celebrate violence.

TechCrunch reporter, Josh Constine, interviewed a Facebook spokesperson at length about the implications and usage of its Community Standards.

What do you think? Do the guidelines go too far? Are they necessary? Sound off below.