Mind Control Riots

The Mind Control Riots (or Mind Control Revolts) were conflicts, taking place between 2043 and 2047, on Earth. 

These were violent demonstrations against computer-implants in brains; some nations were using medical implants (such as those to correct vision impairments) to control more radical members of their populations. (Orion Press: "Lexicon, M-O" [2010 revision])

Many members of Helena Adiwoso's family were killed during these demonstrations. This fostered a belief in her that nothing was permanent and that no one could really be relied on. (: "Heritage")

As late as the 2270s, Starfleet felt that ingrained feelings about such implants would result in maladaptive public reaction to flag officers wearing sensceiver implants.