Advocacy organizations are defending an Arizona lawmaker’s use of social media to alert the public about ongoing immigration raids in their communities. State Sen. Analise Ortiz, D-Glendale, is a self-described Latina activist. She has long been vocal against racial profiling and social justice in the past. But recent posts in various social media accounts seem to have struck a nerve. The president of the state Senate, meantime, is calling for a federal investigation because he believes his colleague may have committed a crime by trying to prevent U.S. Immigration and Customs Enforcement agents from doing their job.