A GROUP of vegan activists who invaded a Northbridge steakhouse and launched a bizarre protest last night are vowing to target other local businesses selling meat.

The group of roughly 15 protestors, who call themselves Direct Action Everywhere, entered Outback Jacks and began chanting slogans and disrupting staff.

In the nine-and-a-half minute video streamed live to Facebook the group enters the restaurant and walks to the rear, holding up home-made signs protesting meat consumption alongside images of animals.

"You would think that increased intelligence would lead to an increased sense of moral responsibility," one protester said, reading aloud from a piece of paper.

Another yelled “It’s not food” several times before the group caught on and replied “It’s violence”, as bemused diners looked on.

The campaign quickly turned into a struggle as staff tried to evict them.

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“They are serving many animals in that restaurant, many animals that did not want to die thrashed and screamed for their lives,” James Warden of Direction Action Everywhere told Seven News today.

The beef about beef caught staff and customers at Outback Jacks by surprise.

Ray Strauss, who runs the family owned business, said: “We had families in here, we had elderly couples, next thing they are pulling out a megaphone and yelling in everyone’s face.”

The group says they planned a peaceful protest but that restaurant staff over reacted.

“Several members of our community were actually assaulted,” Mr Warden claimed.

Outback Jacks’ manager Sasha Fagan denied that claim.

“(There was) No violence, we were just escorting them out they were resisting, we have the right to escort them out,” she said.

The vegans say the attack on Outback Jacks is just the start and they promise to target other food outlets selling meat.

“First they ignore us, then they laugh at us, then they fight us, then we win,” Mr Warden said