Police issued a warning to the group at the north gate then officers started using cutting equipment to separate them.

BBC: Protesters stage anti-Trident blockade at Faslane

On Friday afternoon, the South African Press Association said it had received an e-mail warning that the group was planning more violence, according to the Associated Press.

BBC: Police raids across South Africa

Even when news stories play it straight down the "he says, she says, " line, who, as a parent, are you going to believe: the company protesting that its toy, usually assembled in China, is just fine and dandy, or the "watchdog" group warning that it's frighteningly dangerous and waving a test to prove it?

FORBES: Medialand