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Stacy Harbaugh, ACLU of Wisconsin spokeswoman, said the approach could infringe free speech. "We are very concerned about this kind of enforcement," she said. "We have to ask if it is targeted." Harbaugh said Monday that (former Capitol Police Chief) Tubbs never enforced the "four-person" rule because it was "ridiculous." "The way they were handling it was working up until now, and the only thing that has changed is we have a new chief," she said.