RALEIGH — At a press conference Tuesday, environmental activist and celebrity Erin Brockovich offered a rambling defense of the state’s efforts to take control of four central North Carolina hydroelectric dams between Salisbury and Badin owned and operated by Alcoa Power Generating Inc. “My job here today is not to sit here and bash Alcoa,” Brockovich said at a briefing that took place before an invitation-only event for state lawmakers at the exclusive Capitol City Club. “Agencies, industries, and attorneys need to get together collectively and do what’s right by people,” she added. “It’s time to … give back, and...