LOL. You presented one case where they lost. I presented one case where they won.Yes, I have. Their "Hate map" and everything that goes with it is a one-sided hit piece against groups that aren't on the Left. They omit lots of radical Leftist hate groups of various sorts using all types of convoluted excuses for them where they even deign to mention them. They often target people and groups on the Right using libelous statements that usually end them up in court where they lose.
That looks like they don't usually lose.
Here is a second case they won that the USSC denied to rehear.
CORAL RIDGE MINISTRIES MEDIA, INC. v. SOUTHERN POVERTY LAW CENTER
Now we have 2 cases they won and one they lost so it would seem that based on simple math, they usually end up winning in court.
And here is a third case they won....
3 -1 on wins. Looking forward to you providing 3 cases they lost to support your claim.
It seems you have a problem with the fact that the groups listed as hate groups want to discriminate against certain groups. If you know of any left wing groups that want to discriminate against a sexual or racial minority, let me know and I will see if SPLC will designate them a hate group.