This is what you are currently greeted with when you go to the Wikipedia page for Nikki Haley, the current US Ambassador to the UN (click on image to enlarge):
Haley’s new career as Donald Trump’s “Permanent Representative to the UN” was mired in controversy following a strong display of her subservience to Israeli interests at the UN in early March, 2017. Stridency of Haley’s (hyperbolic) reaction to a report titled “Israeli Practices Toward the Palestinian People and the Question of Apartheid” by the UN agency “Economic and Social Commission for Western Asia (ESCWA)”, has taken many independent UN observers and analysts by surprise.
The report, authored by a beacon of the international movement against the murder and oppression of Palestinians by Israel, Richard Falk, and Virginia Tilley (Professor of Political Science at Southern Illinois University-Carbondale) hardly deserved such condemnation. Haley’s vigorous demands for the immediate withdrawal of the report and her personal abuse of Richard Falk suggested that Haley was attempting to outdo her neocon sycophant predecessors on the job such as Madeleine Albright, Richard Holbrooke and Samantha Power.
Disturbingly for the future of the term of new UN Secretary General Antonió Guterres, he duly withdrew the report citing procedural issues . The role of his spokesman Stéphane Dujarric (a Georgian and alumni of the Georgetown University with strong US connections) has been the subject much discussion among UN insiders with long experience with Israeli maneuvers at the UN.
Haley’s claimed Indo-American background  has come under scrutiny following this performance.
It looks like a Wiki user by the name of Angel Muse is responsible for this online vandalism, prompted by Nikki Haley’s wonderful job in her new role so far, calling out the UN for its bias towards Israel.
Unfortunately, this is the world of the World Wide Web. The haters are in abundance, and spend much time and energy harassing, bullying, lying, and vandalizing – all motivated by an unhinged hatred of Israel and the Jewish people.
(Hat tip: Michael)
Update: It seems an Israel supporter has deleted the changes.