Many companies, it seems, are growing their conscience — or at least, their employees are. Workers are exercising greater muscle when they see their employer taking on a contract they perceive as involving morally questionable work, and they are taking action. At Google, employees recently protested their own company’s bid to develop a search engine for China that censors results based on terms blacklisted by the government. Meanwhile, workers at Microsoft have petitioned their bosses to cancel the company’s contract with the U.S. Immigration and Customs Enforcement agency. “We demand Microsoft stop enabling ICE’s mission to punish families seeking safety,” reads the petition, which also calls for all tech firms to end their work with ICE. Labor unions may be on the wane, but workers, fueled in part by the organizing power of social media during a time of greater political strife, may be ushering in a new era of employee activism on moral and ethical issues.…