The 1820 settlers were several groups of British colonists settled by the government of the Kingdom of Great Britain and the Cape Colony authorities in the Eastern Cape in 1820.
According to SA History, a year after the brutal battle of Makhanda (formerly known as Grahamstown), the 1820 settlers landed in Port Elizabeth, where they were granted farms and were given tools and aid against their deposit.
On social media, many, including Helen Zille, warned him “not to go there”.
Here is a screenshot of what people had to say.