During an arrest, there are violations that could occur which may contribute to a beneficial defense. Individuals such as law enforcement officers and judges are granted a lot of power by governmental agencies. It is paramount to ensure they do not abuse this power.
Anyone acting under this delegated power should not deprive anyone of their rights. Examples of violations include use of excessive force, and illegal search and seizure.
A skilled criminal defense team has the experience and skills necessary to identify when your rights were violated during an arrest, in order to add leverage to your case.