Well, I don’t know about “we”, but “you” might be - can you point to where he advocated violence? He has penned a book on civil protests, you know, and while these may occasionally have a few hotheads, it is not them that his views apply to. Alinsky’s rules specifically focus on gathering public support for a certain idea. Yes, his advice deals with confrontation - in order to wrest concessions from more powerful entities. Not every conflict is a violent one.
His idea is that power lies with money, and with the people - and his rules are for those who don’t have the money. Ergo, they must find ways to get the people on their side. That’s something any activist, on any side, could use - and many have.