ICE and Border Patrol generally require reasonable suspicion, not just probable cause, to detain individuals in public spaces, and courts have ruled against indiscriminate racial profiling or warrantless sweeps targeting people based on race or appearance.
Without probable cause or reasonable suspicion, ICE and Border Patrol cannot just go into parks, Home Depots, and other public spaces just to round up Brown people.

FactVerify
Source: factverify.com
Key Evidence
Legal standards require reasonable suspicion, not just a hunch, for ICE and Border Patrol to detain individuals in public spaces.
Courts have ruled against warrantless raids and racial profiling targeting 'brown skin' individuals.
Officials acknowledge physical appearance alone cannot justify detention.
What the Evidence Shows
The claim asserts that without probable cause or reasonable suspicion, ICE and Border Patrol cannot arbitrarily enter public spaces such as parks or Home Depots to round up people based on their race or ethnicity ('Brown people'). Legally, the Fourth Amendment protects against unreasonable searches and seizures, requiring at least reasonable suspicion for brief detentions by law enforcement, including immigration agents.npr.orgnpr.orgFederal judge orders stop to indiscriminate immigration raids in Los Angeles :...
ICE and Border Patrol agents do not need probable cause to briefly detain someone but do need reasonable suspicion supported by specific facts.calmatters.orgcalmatters.orgJudge restricts Border Patrol in California: 'You just can’t walk up to people...
npr.orgnpr.orgFederal judge orders stop to indiscriminate immigration raids in Los Angeles :... Detaining individuals solely based on physical appearance or race is constitutionally impermissible and has been challenged in courts. Recent federal court rulings have restricted Border Patrol from conducting warrantless raids or indiscriminate arrests in public places like Home Depot parking lots when these actions appear to target individuals based on race or without individualized suspicion.
However, some officials have made statements suggesting that physical appearance can factor into detentions, though this cannot be the sole basis for reasonable suspicion.thehill.comthehill.comHoman claims ICE officers ‘don’t need probable cause’ to ‘briefly detain’ people
independent.co.ukindependent.co.ukBorder Patrol carries out raid at Home Depot parking lot 600 miles from... Civil rights groups like the ACLU have sued to halt raids they allege are racially discriminatory and unconstitutional. Thus, while ICE and Border Patrol have broad authority to enforce immigration laws, their actions are legally constrained by constitutional protections against unreasonable searches and racial profiling.
The claim is mostly accurate but simplified; it conflates probable cause with reasonable suspicion and omits nuances about legal standards and ongoing legal challenges.