It's never happened. Security guards are not going to break the law and get themselves arrested and their employer sued. Beating people up is a privilege reserved entirely for union thugs.
Oh, puh-leeze.
An Eclectic List of Events in U.S. Labor History
July 1851 - Two railroad strikers were shot dead and others injured by the state militia in Portgage, New York.
14 July 1877 - A general strike halted the movement of U.S. railroads. In the following days, strike riots spread across the United States. The next week, federal troops were called out to force an end to the nationwide strike. At the "Battle of the Viaduct" in Chicago, federal troops (recently returned from an Indian massacre) killed 30 workers and wounded over 100.
23 November 1877 - The Thibodaux Massacre. The Louisiana Militia, aided by bands of "prominent citizens," shot at least 35 unarmed black sugar workers striking to gain a dollar-per-day wage, and lynched two strike leaders.
6 July 1892 - The Homestead Strike. Pinkerton Guards, trying to pave the way for the introduction of scabs, opened fire on striking Carnegie mill steel- workers in Homestead, Pennsylvania. In the ensuing battle, three Pinkertons surrendered; then, unarmed, they were set upon and beaten by a mob of townspeople, most of them women. Seven guards and eleven strikers and spectators were shot to death.
1894 - Federal troops killed 34 American Railway Union members in the Chicago area attempting to break a strike, led by Eugene Debs, against the Pullman Company. Debs and several others were imprisoned for violating injunctions, causing disintegration of the union.
10 Sep 1897 - 19 unarmed striking coal miners and mine workers were killed and 36 wounded by a posse organized by the Luzerne County sherif for refusing to disperse near Lattimer, Pennsylvania. The strikers, most of whom were shot in the back, were originally brought in as strike-breakers, but later organized themselves.
12 Oct 1902 - Fourteen miners were killed and 22 wounded by scabherders at Pana, Illinois.
8 June 1904 - A battle between the Colorado Militia and striking miners at Dunnville ended with six union members dead and 15 taken prisoner. Seventy-nine of the strikers were deported to Kansas two days later.
24 Feb 1912 - Women and children were beaten by police during a textile strike in Lawrence, Massachusetts.
20 Apr 1914 - The "Ludlow Massacre." In an attempt to persuade strikers at Colorado's Ludlow Mine Field to return to work, company "guards," engaged by John D. Rockefeller, Jr. and other mine operators and sworn into the State Militia just for the occasion, attacked a union tent camp with machine guns, then set it afire. Five men, two women and 12 children died as a result.
13 Nov 1914 - A Western Federation of Miners strike is crushed by the militia in Butte, Montana.
19 Aug 1916 - Strikebreakers hired by the Everett Mills owner Neil Jamison attacked and beat picketing strikers in Everett, Washington. Local police watched and refused to intervene, claiming that the waterfront where the incident took place was Federal land and therefore outside their jurisdiction.
12 Jul 1917 - After seizing the local Western Union telegraph office in order to cut off outside communication, several thousand armed vigilantes forced 1,185 men in Bisbee, Arizona into manure-laden boxcars and "deported" them to the New Mexico desert. The action was precipitated by a strike when workers' demands (including improvements to safety and working conditions at the local copper mines, an end to discrimination against labor organizations and unequal treatment of foreign and minority workers, and the institution of a fair wage system) went unmet. The "deportation" was organized by Sheriff Harry Wheeler. The incident was investigated months later by a Federal Mediation Commission set up by President Woodrow Wilson; the Commission found that no federal law applied, and referred the case to the State of Arizona, which failed to take any action, citing patriotism and support for the war as justification for the vigilantes' action.
1 Aug 1917 - IWW organizer Frank Little was lynched in Butte, Montana.
27 Jul 1918 - United Mine Workers organizer Ginger Goodwin was shot by a hired private policeman outside Cumberland, British Columbia.
26 Aug 1919 - United Mine Worker organizer Fannie Sellins was gunned down by company guards in Brackenridge, Pennsylvania.
19 May 1920 - The Battle of Matewan. Despite efforts by police chief (and former miner) Sid Hatfield and Mayor C. Testerman to protect miners from interference in their union drive in Matewan, West Virginia, Baldwin-Felts detectives hired by the local mining company and thirteen of the company's managers arrived to evict miners and their families from the Stone Mountain Mine camp. A gun battle ensued, resulting in the deaths of 7 detectives, Mayor Testerman, and 2 miners.
21 Nov 1927 - Picketing miners were massacred in Columbine, Colorado.
4 May 1931 - Gun-toting vigilantes attack striking miners in Harlan County, Kentucky.
10 Oct 1933 - 18,000 cotton workers went on strikein Pixley, California. Four were killed before a pay-hike was finally won.
This kind of thing used to happen ALL THE TIME. The only thing that prevents it now is that it has been made illegal by the very law founding the government agency that this bill, being discussed in this thread, would make toothless.
Really, before you proclaim something like that so loudly, I would recommend you learn something about what you're talking about. You risk embarrassing yourself badly, as you just did.