The Brotherhood of Eternal Love was a group of people who lived in the 1960s and 1970s in California, USA. They were a group of people who believed in peace, love, and the power of the mind. They were also known for using psychedelic drugs like LSD (which can make people see things that aren't really there), as part of their spiritual practices.
The Brotherhood believed that they could help make the world a better place by spreading their message of love and peace, and by using drugs to help people open up their minds and see things in a new way. They also thought that some of the rules of society were wrong and that people should be free to do what they want as long as it doesn't hurt anyone else.
However, the use of drugs was illegal and the Brotherhood faced a lot of trouble from the authorities. Many of its members were arrested and put in jail. Because of this, the Brotherhood had to be very secretive in their operations. They even had their own secret language and rituals, which only members of their group could understand.
Overall, the Brotherhood of Eternal Love was a group of people who believed in love, peace, and the power of the mind. However, their use of drugs made them an easy target for the authorities and they had to be very careful how they operated.