Anger and frustration borne out of Arizona’s tough immigration law has galvanized Latinos young and old to register to vote, get politically engaged and have their voices heard. Much of the anger from two years ago, when Gov. Jan Brewer signed Senate Bill 1070 into law, has subsided. These days, opponents of the law feel more empowered — even optimistic — that their voices will make a difference. It’s that sentiment that drove about 500 opponents of the immigration law to a Wednesday afternoon rally and march in downtown Phoenix. The rally featured families of many ethnic and racial backgrounds; 20-something men in luche libre masks; oversized papier-maché heads of Brewer and Maricopa County Sheriff Arpaio; dozens of homemade signs; and testimonials from Dream Act students.