It was a bold examination of how, in times of crisis, fear and conformity can be deliberately harnessed by those in power to manipulate public behaviour and silence dissent.

Her message was a call to defend the freedom to question, to challenge authority, and to think independently.

The local TEDxUNSW team, who had worked closely with Foster to ensure her talk met TEDx standards, described it as "insightful and important."

But when the video was submitted to TED's US headquarters for publication on the organisation's official YouTube channel, it was rejected.

The reason? The talk "did not adhere to the TEDx content guidelines."

A Defence of Dissent—Silenced

Foster's talk drew on the Covid-19 experience, arguing that during the pandemic, the space for critical thought collapsed. Dissenters were vilified, and dialogue gave way to dogma.

She described how critics of mainstream Covid responses were smeared with labels—"a danger to public health…a tinfoil hat-wearing conspiracy theorist…probably a prepper or a cooker…almost surely a far-right extremist and probably racist to boot."

Drawing comparisons with the Cultural Revolution and the rise of Nazi Germany, she warned that the marginalisation of dissent has deep historical roots—where enemies of the state are manufactured to maintain social control.

Foster recalled being labelled a "granny killer," defamed online (despite never having a Twitter account), and receiving death threats for questioning lockdown policies.

"Well, I didn't shut up," she said. "And today, more than four years on… hundreds of books, academic papers, and tragic personal stories confirm I was right."

"The lockdowns didn't save lives. They were rather a massive human sacrifice induced by fear, politics, and money," she added.