Gang Expert

Witness Testimony

Qualified Defense Expert

Gang Expert Witness

David Lee Windecher is a qualified defense Gang Expert witness for hire on the subject of criminal street gangs. A Criminal Street Gang is an organization, association, or group of three or more persons associated in fact, whether formal or informal, which engage in criminal activity. 

David’s testimony, as to criminal street gangs, is rooted in his personal experience as a former member of the Almighty Latin King Nation (Miami Chapter) and from working with current and former gang members through his restorative justice non-profit organization. David’s testimony has been referenced by the Georgia Court of Appeals in State of Georgia v. Lopez (A19A0527)(2019).

David In Office
Troubled Teen

Street Gang Expert

Given his past experience, David is well versed in the culture and activities associated with nationally renowned criminal street gangs. David is fully educated in street gangs such as the Bloods, Crips, Gangster Disciples (aka GDs), Black Mafia Family (aka BMF), Folk Nation and Mara Salvatrucha (aka MS-13), as well as smaller organizations that operate at the local level. His knowledge extends into an organization’s origin, culture, activities, membership procedures, hierarchy structure (vertical-horizontal-hybrid), code of conduct, graffiti symbols and tattoo markings. David understands how criminal organizations conduct their activities which include the authorizing of gang-related acts as well as the consequences attached to independent non-gang-related acts performed by affiliated gang members.


David has the knowledge and experience to assist defense attorneys in dismantling the nexus required in criminal street gang prosecutions by testifying before a judge or jury to help explain the difference between crimes committed by validated gang members (that further the interest of a criminal organization) or crimes committed that are independent rogue acts by validated gang members (that do not further the criminal organization’s interests).


David will testify that being a validated gang member is not against the law in and of itself. David will testify on behalf of individuals or organizations charged with criminal street gang offenses under criminal street gang statutes as well as law enforcement agencies and or prosecutorial offices.

The Criminal Street Gang Act

The Criminal Street Gang Act is violated only when a validated gang member commits a crime that furthers the interest of their criminal organization. The prosecuting official must establish a probative connection between gang affiliation and organizational interests, otherwise the charges should not result in a conviction of the criminal street gang act.

Gang defense

Criminal Street Gang Prosecution

As a qualified gang expert witness for the defense, David’s role is to explain to a judge or jury the psychology of being in a gang as well as how to interpret the Criminal Street Gang Act as it pertains to the case at bar.

For more information on hiring David as a Gang Expert witness for your case, contact him today. 

Criminal street gang prosecutions require the prosecuting official to establish three elements beyond any reasonable doubt:

The charged individual is a validated gang member.

The charged individual committed a predicate act under the criminal street gang statute.

The predicate act was intended to further the interests of the criminal street gang organization

Interested in Hiring a Gang Expert Witness?