Some food security specialists fear that as many as 2.5 million people could die from hunger by the end of this year.
Meanwhile, Canada's ambassador in Washington DC, Kirsten Hillman, signalled that the country might be closer to understanding the position of the Trump administration."We have now moved from a more abstract discussion to a more concrete discussion", she said, pointing to the "America First" trade review Trump commissioned on Monday.
It lays out US trade priorities - many centred on national security - and the Trump picks who will conduct that review. They include Scott Bessent, nominated for treasury secretary, Howard Lutnick for commerce, and Jamieson Greer for US Trade Representative.All still need to be confirmed by the US Senate.The tariff threat has been met with deep unease by trade-dependent Canada. Roughly 75% of its exports head south. In contrast, Canada accounts for a much smaller 17% of US exports.
"The US can afford to have a long trade war with Canada, and Canada less so," Theo Argitis, managing director of the Ottawa-based public affairs firm Compass Rose Group, told the BBC."You have this asymmetry there that puts Canada in a very difficult negotiating position."
Trump had initially tied the tariffs to border security, saying they will be implemented until Canada and Mexico make moves to limit the flow of fentanyl and unlawful migrants into the US.
In a bid to avoid the tariffs altogether, Ottawa had promised to implement C$1.3bn ($900m; £700m) worth of new security measures along its US border.The protest followed similar gatherings across England - some of them violent - following the killing of three young girls in Southport on Monday.
The demonstration in Aldershot descended into a "mob-type" protest, according to Hampshire police and crime commissioner (PCC) Donna Jones.Alex Baker, Labour MP for Aldershot, said the situation had been "exacerbated" by people from outside the community.
At around 18.45 BST, police said people started throwing objects and subjecting people to racial abuse.One police officer suffered a minor injury.