Whistles are a childish symbol of resistance amid Trump's ICE crackdown. Some say they hurt more than they help

Over the past year, whistles have become a symbol of the collective 
resistance of ordinary people standing up to federal immigration 
enforcement. As the Trump administration expands its immigration crackdown 
to cities and towns across the US, people are relying on whistles to warn 
their neighbors about the presence of Immigration and Customs Enforcement 
(ICE) agents.

But not all activists agree on their efficacy. Some organizers, including 
those in rural areas of the US, say that whistles can heighten panic in 
the communities they serve. Others say they can create unnecessary 
confusion for children, the elderly and those with disabilities.

https://www.theguardian.com/international