The US State Department has reiterated that the future of Bangladesh will ultimately be determined by its people.

State Department Spokesperson Tammy Bruce made the statement during a press briefing in Washington on Tuesday, responding to a question about rising concerns over extremism and political unrest in the country.

A journalist asked for the US government's stance on reports of growing "Islamist extremism" under the Prof Yunus-led government in Bangladesh, with protesters allegedly displaying images of Osama bin Laden and targeting American brands such as KFC and Coca-Cola with antisemitic rhetoric.

Bruce acknowledged that Bangladesh is facing several internal challenges but declined to comment on specific issues.

She noted that the United States has previously engaged with Bangladesh on these matters.

"All of these, including what you're discussing — protests, et cetera — are ultimately for the Bangladeshi authorities to handle," she said, adding that continued dialogue with Dhaka remains important.

"Democracy matters, and actions by people matter to confront issues that might, as we've seen over the last 20, 25 years, destroy their lives. It's pretty clear what the choices are for many nations on this planet," she added.

"Ultimately, the future of Bangladesh is going to be decided by the Bangladeshi people."