The UN organizes another wasteful high carbon footprint photo opportunity for "some 60 world leaders"

The UN has announced another wasteful and totally useless global warming photo opportunity:

Bonn, April 7, 2016 - The Paris Climate Change Agreement opens for signature on 22 April 2016 during a high-level ceremony convened by UN Secretary-General Ban Ki-moon in New York, marking an important international push on the way to the agreement’s timely entry into force.
Over 130 countries have confirmed to United Nations headquarters that they will attend the signing ceremony, including some 60 world leaders, amongst them President Francois Hollande of France.

PS

One wonders why the greenies are not voicing a strong protest against this high carbon footprint tourism paid for by ordinary taxpayers in "over 130 countries"? ...