Google employees are organizing around a new concern: keeping their jobs

Nearly 100 Google employees held a protest about job security on Thursday. Pranav Dixit/Business Insider Nearly 100 Google workers rallied near the company's Mountain View headquarters. More than 4,500 employees signed a petition seeking stronger layoff protections. Workers want guaranteed severance, voluntary exits, and an end to performance quotas. Dozens of Google employees from around the country gathered in the shadow of the company's Mountain View headquarters on Thursday, holding signs…