What steps can be taken to combat Security Threat Groups such as "EME" (Mexican Mafia) without violating inmates' constitutional rights?

Inmate constitutional rights include:

• The right to humane facilities and conditions
• The right to be free from sexual crimes
• The right to be free from racial segregation
• The right to express condition complaints
• The right to assert their rights under the Americans with Disabilities Act
• The right to medical care and attention as needed
• The right to appropriate mental health care
• The right to a hearing if they are to be moved to a mental health facility