<Tr> <Td> <Ul> <Li> Espionage </Li> <Li> Intelligence agency </Li> <Li> Cryptography <Ul> <Li> Tor </Li> <Li> VPNs </Li> </Ul> </Li> <Li> Human rights <Ul> <Li> Privacy </Li> <Li> Liberty </Li> </Ul> </Li> <Li> Satellites </Li> <Li> Stop Watching Us </Li> <Li> Nothing to hide argument </Li> </Ul> </Td> </Tr> <Ul> <Li> Espionage </Li> <Li> Intelligence agency </Li> <Li> Cryptography <Ul> <Li> Tor </Li> <Li> VPNs </Li> </Ul> </Li> <Li> Human rights <Ul> <Li> Privacy </Li> <Li> Liberty </Li> </Ul> </Li> <Li> Satellites </Li> <Li> Stop Watching Us </Li> <Li> Nothing to hide argument </Li> </Ul> <Li> Cryptography <Ul> <Li> Tor </Li> <Li> VPNs </Li> </Ul> </Li> <Ul> <Li> Tor </Li> <Li> VPNs </Li> </Ul>

What is the meaning of big brother in 1984