No, the news that gangs of Brazilian and African migrants surrounded and attacked European tourists at Estoril beach in Lisbon is not true. The story was originally reported by the Portuguese website Observador, but it was later retracted after it was revealed that the article was based on a fake Facebook post.
The fake post claimed that a group of Brazilian and African migrants had attacked a group of European tourists at Estoril beach. The post also included a video that purported to show the attack. However, the video was actually from a different incident that had taken place in Brazil.
The Observador article was widely shared on social media, and it was picked up by other news outlets. However, the article was quickly retracted after it was revealed that the story was false. The Observador apologized for publishing the article, and it said that it had been misled by the fake Facebook post.
The false story about the attack at Estoril beach is a reminder of the dangers of fake news. Fake news can be very convincing, and it can spread quickly on social media. It is important to be critical of the news that you see online, and to only share news from reputable sources.