The Bible does not say, "Hate the sin, love the sinner." It says, "As a man thinks in his heart, so is he" (Prov. 23:7). And that God hates "all workers of iniquity" (Ps 5:5). "The Lord abhors the bloodthirsty and deceitful man" (Ps 5:6). Also "the wicked and the one who loves violence [God] hates." (Ps 11:5). Further, "The face of the Lord is against those who do evil" (Ps 34:16). God "loves righteousness and hate[s] wickedness (Ps. 45:7).
Here is some reading material...
http://www.lo-l.com/P/nicerthangod.htm
http://www.lo-l.com/P/Judgerightly.htm
Fault the Westboro on a number of things, but don't be fool by others that God is just a pushover on sin.
Our God is a Jealous God too...
Which is why our Lord sent His only begotten son to pay for our sins and provide us with a path to His Kingdom. The words of Jesus teach us much about the tolerence of God, and that he will allow us to repent our sins. While the New Testament doesn't remove the teachings of our Lord in the Old Testament, we are afforded our Lord's generosity from it. No, he's no pushover. And those who continue to live their lives in sin will pay for that dearly. But God has provided us with a means of redemption if we but accept Jesus as our Savior.