1) Acts of "street theater" - usually consisting of "acts" carried out to induce paranoia, and the feeling that you are being watched. This can be done by doing things which, unto themselves, seem like random occurances or accidents, but, when seen objectively on the whole, a pattern presents itself. It could come in the form of being followed by other vehicles whenever you leave the house. Mail tampering. Email tampering. Apparent illegal entry of the home. People making remarks to you in public that are relevant to remarks you've made in private. All of these things seem like harmless, random events until you realize there actually is a pattern to the events. When the victim complains to authorities or even loved ones, they are viewed as paranoid, mentally illl and delusional... as the dialectic of their harassment intended.