Thanks for editing your post to include a photo that demonstrates precisely why Powell and his racist admirers and supporters are wrong.
Powell never predicted terrorism, even though the UK had experience of it.
Nor did he predict the vast majority of non white, non Anglo Saxon Britons being proud of their nation, contributing to the welfare and good of the nation, abiding by the law, many serving in the armed forces, police.
Look how proud and happy that woman looks.
Powell was a racist, all he had was messages of fear and hate.
Then, as now, he had his admirers and defenders.
Incidentally, did you take that photo yourself or was it after you had already left the UK?