How to get evidence for insulting others in public?

If the other party does not admit the facts and contents of the abuse, evidence is needed to prove it. Evidence of abuse is also the material to record the content of the other party's abuse, which will be different according to the different ways of abuse. For example, common insults can be obtained through audio and video recording, and can also be proved by witness testimony. If it is abusive, it will be easier to obtain evidence. At present, the common forms of abuse mainly include texting, WeChat, Tencent QQ or posting notices. At this time, you can leave corresponding records. However, it should be noted that it is necessary to keep the original written record, and the original record cannot be deleted just by keeping the screenshot, because the legal nature of the screenshot belongs to the copy, not the original, and the evidence used in the lawsuit should be checked with the original.