Malignant boycott: refers to the uncivilized, irrational, and boycott behavior that may be caused by the parties when their legitimate rights are damaged for a long time and cannot be resolved through repeated consultations. Which of the following are vicious boycotts? ['The owner of a community can\'t stand the noise of the square dance. After repeated communication failures, he raised 260,000 yuan to buy a public address system commonly known as "treble cannon", and played the car horn sound in a loop to the square every day.', 'The orchard contracted by Lao Li has been frequented by thieves many times. In order to avoid greater losses, he wrapped iron wires and connected electricity to several fruit trees. Since then, the orchard has never been stolen again.', 'The property of the community found that the speed of the battery-powered express car was too fast and there were potential safety hazards. They repeatedly asked them to slow down, but with little effect, so all battery-powered express cars were prohibited from entering the community.', 'A community has been harassed by "psoriasis" advertisements for a long time, so I bought a "call to death" software and called the mobile phone numbers on the advertisements one by one, which quickly solved the big problem.']