The truth of the matter is that in recent memory, the only political organization that has been present as a group in the parade has been the Republican Jewish Coalition. Its Jewish Democrat counterpart, apparently now in harmony with Obama's foreign policy, has been conspicuous by its absence.
As for Weiner, does anyone really think that a guy who is married to an Arab woman with whom he is trying to mend fences would go to a pro-Israel event?
Pro-Israelists do NOT want him there now...
Most emphatically "yes." I've lived in the NY area the past few years, and Weiner has showed up at maybe 6 or 7 Jewish events I've been at, largely Shabbat dinners and pro-Israel events. He always comes in and gives a 10 minute shpeel telling the audience exactly what it wants to hear. At the "Shabbat Dinner Circuit" he does (i.e., goes from meal to meal) he pops in for 10-15 minutes, feigns devotion to Shabbat and Judaism, then leaves for his next engagement. At pro-Israel functions, he invariably shows up and throws off harmless pro-Israel platitudes to feed the sheeple. His absence today is most surprising.