Raising the Roof is an organisation from Canada that is looking for long-term solutions to homelessness, and its campaign called Humans For Humans is encouraging people to show compassion to the homeless.

To open the world's eyes about the emotional plight of homeless people, they created a heartbreaking video showing homeless people reading cruel tweets about homelessness.

The homeless people reading the cruel tweets were shocked with other people's opinions, while some were even brought to tears.

These were some of the tweets compiled by Raising the Roof, which they shared with the homeless people:

"I was enjoying a latte when I saw a hobo girl across the street. I almost vomited. Get back to your side of the bridge. No 1 Likes u."

"In all honesty, I kinda don't feel bad for homeless people. Each individual is in control of their life and future so its all their fault."

"If home is where the heart is, then are homeless people heartless?"

"I hate when homeless people expect us to feel sorry for them we all have the same 24 hrs what you chose to do with it is up to you."

"I hate when it get cold out cuz then all the homeless people get on the bus."

Raising the Roof wants people to realise that their prejudices against homeless people are wrong, to stop treating them with disdain, and start showing some compassion and understanding.

The organisation collected the reactions of homeless people they talked with in order to give people a glimpse of what they are going through.

"I've read numerous tweets about how foul and disgusting homeless people are. I just want to let you know that not all of us had a choice," said Melissa, who was homeless for 10 years.

Kubby has been homeless for most of his life, 47 years in total. He said: "We're not all bad people. We've got feelings, we're caring. We have friendships. Just give us a chance."

Jesse has been homeless for three years and hopes for humanity to prevail over social status. "Let's stand together as people. Why is it that we need to constantly be begrudging other people just because of the way they look, the way they sound, or the way they smell? That is still a person who is drawing breath. They still have a heartbeat. They still love, they have sadness. They're still people," he said.