Erdemir has been one of the most outspoken critics of antisemitism in Turkey. In September 2014, at a press conference he held at the Turkish Parliament to mark Rosh Hashanah, citing a recent study by the Anti-Defamation League, he warned that "Turkey tops Iran in antisemitism league." The next month, he filed a motion to set up an Ad-Hoc Parliamentary Committee on Antisemitism to look into discrimination, hate speech, and hate crimes targeting Turkey's Jewish community, a first in the history of the Grand National Assembly of Turkey. In November 2013, at the height of the Turkey-Israel flotilla crisis, Erdemir traveled to Israel to attend a conference at Hebrew University of Jerusalem's Truman Institute for Peace to promote Turkish-Israeli rapprochement, and stated that "politicians can give you many reasons why this can’t happen, but it takes a statesman to build peace.” In an op-ed he later penned for The Times of Israel, he warned that "real rapprochement with Israel requires Turkey to tackle antisemitism."