I disagree. Political parties are not ideological entities despite what people seem to believe. They are collections of power blocs and interest groups that direct themselves towards a unified goal/goals within a political space. They are inherently political, not ideological. And this, in turn, is what people falsely interpret as an ideology. Plenty of people serve parties only to meet their own goals, not serve and ideological purpose. Or an ideological person antithetical to the outwardly proclaimed goals of a party.
Political parties should not be inherently tied to movements because movements are ideological activity of blocs of people that exist outside the political machine. Political parties can support them, but they aren't directly linked together.
Occupy Wallstreet was not a political movement or a party movement. It was a movement of interest groups.
If anything, I think there aren't enough interest groups and they are too broad. Like "Devout" is extremely reductive to the various of religious blocs beliefs and goals. Or Trade Unions seemingly been a catch all for everything socialist.