This inability to pay rent isn't as much because wages got lowered, it's mostly because certain cities decided that they didn't want any more housing, in order to appease land owners and drive up housing prices to astronomical levels. But it's also unethical to pay somebody for a job if they can't use those wages to live.
Fortunately I'm not aware of any police violence against the grad students yet, but there has been plenty of UC police violence in the past against striking workers.
This is not an identical situation to the delayed bonuses discussed in the article. But as tech heavy as HN we may not be as in touch with a workforces that get squeezed on basic ability to survive, such as assembly in China or grad students in California. (Or dare I mention the farm workers that put all the food on our table...)