Menlyn Park Shopping Centre Management also confirmed the protest action at H&M store, saying that the safety and security of their customers, staff and tenants was of utmost importance, and the affected area has been secured by the South African Police Serves (SAPS).
H&M has since taken down the advert and apologised.
The company told Huffington Post: "By a positive image we mean that we use a mix of models with different ethnic backgrounds in our campaigns". Ndlozi wrote on Twitter, posting pictures of a vandalized H&M store and video footage of chanting EFF supporters.
Dozens of EFF protesters wearing same red T-shirt on Saturday morning rushed into an H&M store in Sandton City, one of the most prosperous shopping centers in Johannesburg, vandalizing mannequins and scattering clothes on the floor.
It featured a young black boy modelling a green hoodie with "coolest monkey in the jungle" written on it.
"At the East Rand Mall the protesters managed to enter the shop and stole several items", he said.
Police officers were seen patrolling around the mall monitoring the situation after rubber bullets were used to disperse the EFF protestors. "If they are not going to close the shop, they must just know we are going to be here nearly every day, starting from today", he said.
People were confused about the "positive image" remark, asking H&M if they thought black people conveyed another message.
"The time of apologies for racism are over", he said.
Addressing the EFF store takeovers, she tweeted that "apartheid and racism [have] corrupted some so much that this is thought to be reasonable in response to a hoodie with the word "monkey" on it".
Singer The Weeknd, who had collaborated with the company, said the advert made him feel "shocked and embarrassed". "I'm deeply offended and will not be working with H&M anymore".