It's not just another anti-union piece from Front Page Mag, they've got the dirt from SEIU's past. Check out "How Socialist Unions Rule the Democratic Party":

This biggest union in the AFL-CIO, the Service Employees International Union (SEIU), which by year's end will have 1.8 million members, at its June convention in San Francisco agreed to spend $40 million for more than 2,000 organizers to work full-time against President Bush in 17 key battleground states. It also plans to supply 50,000 "volunteers" from its members just prior to and on election day. And SEIU will spend an additional $25 million on voter registration, "education" and getting out the vote...

The current president of the SEIU is Andrew Stern, a former New Leftist came out of the University of Pennsylvania, where he was an anti-Vietnam War activist. One of the eulogies given at a Democratic Socialists of America memorial after the death of DSA co-founder Michael Harrington gave tribute to "the people who worked with or fought with Mike who now staff high councils of the AFL, like Andy Stern of SEIU…." Stern is one of many radical union organizers who came out of the Midwest Academy which was formed by SDS radicals Heather and Paul Booth to train community organizers and infiltrate the labor movement...

SEIU began as a Chicago-based janitors' union. It was Stern, using New Left tactics of the 1960s with Sweeney's approval, who shut down parts of Los Angeles with a "Justice for Janitors" strike that blocked not just one company but city streets as well. These workers, at Stern's direction, wore red shirts and carried signs depicting brooms held in the clenched fist that symbolizes Marxism...

The article links to "The New Left Takes Over American Unions", quoting the following:

Like the industrial unions in the 1930s, the public-sector unions have pushed the entire labor movement to the left. The Service Employees International Union, or seiu, has embraced organizations with a New Left origin, such as acorn and Cleveland's Nine to Five, and has even set up its own gay and lesbian caucus. "Most of the radicals who went into labor ended up in the public employee unions," observes one labor official.

The rise of these unions led to the elevation of SEIU's boss, John Sweeney, to head of the labor federation. No George Meany-style bread-and-butter unionist, Sweeney is an advocate of European-style democratic socialism. He has opened the afl-cio to participation by delegates openly linked to the Communist Party, which enthusiastically backed his ascent. The U.S. Communist Party says it is now "in complete accord" with the afl-cio's program. "The radical shift in both leadership and policy is a very positive, even historic change," wrote cpusa National Chairman Gus Hall in 1996 after the afl-cio convention.

That alone is enough to send shivers down the spines of many labor activists, particularly those old enough to remember the earlier struggles against the totalitarian left. "All the people we thought we got rid of 40 years ago are back in there," complains one Detroit area labor lawyer close to the United Auto Workers. "It's like the 1930s all over again..."