Shaykh al-Islam Ibn Taymiyah (may Allah have mercy on him) was asked about a man who was regarded as a man of good character by the judges and he went out in the spring time, when the people gathered to watch some celebrations, and he saw evil being committed but was not able to stop it, and his wife also went out with him. Is that permissible and did it affect his good character? 

He replied: 

A person should not attend places in which he sees evil being committed and he is not able to denounce it, unless that is for a necessary, legitimate shar‘i reason, such as if there is something that he needs for his religious or worldly interests and he has no choice but to be present or he is forced to do so. But as for attending it just to watch and bringing his wife to see that, this is something that does affect his good character and dignity, if he persists in it. And Allah knows best.