I did not practice that type of law. I don't feel particularly well suited to law in general though. I can't speak for all INFJs. Most of the lawyers I knew were Is, but had to let their shadow E takeover in order to function. I've never seen a profession so rife with alcoholism and depression. A number of therapists I've spoken to said lawyers were among their most emotionally tortured clients because they had the ability to be very good at something that made them very unhappy. I am pretty sure Introversion figured highly into this problem, probably an unusual number of INFJs. But like I said, can't speak for others. I never considered MBTI when in the field.
[MENTION=14378]Mungbean[/MENTION] criminal law (and indeed anything that even sees the inside of a courtroom actually) is high profile (the news, TV shows etc), but a small fraction of the entire field.