On Sunday evening, the UK Conservative party finally announced plans for the criminalisation of anti-Israel boycotts by public bodies, town councils, libraries, universities and some student unions.

“We need to remind people,” a prominent Conservative supporter of the policy said in September 2014, “that what began with a campaign against Jewish goods in the past ended with a campaign against Jewish lives.”

While the move reflects deeply held political views of the Conservative politicians involved, the legislation is also partly a response to lobbying from Daniel Taub, the former Israeli ambassador, who has portrayed the Boycott, Divestment and Sanctions movement as motivated by a desire to destroy the Jewish people, and an existential threat to the state of Israel.BDS-tactics-are-not-anti-Semitic

This distorted understanding of BDS is grossly unfair. The BDS movement does favour a one-state solution called Palestine, but not one achieved through violence and not one where Jews are second-class citizens or are denied access to their religious sites. Its manifesto is a radical political position, but it is not anti-Semitic

The BDS movement should stick to lobbying publicly accountable bodies, but it is this entirely legitimate activity which Prime Minister David Cameron is now planning to criminalise.

Even if the BDS tactics are offensive and insensitive, they are still not anti-Semitic. Rarely mentioned is that Marks & Spencer, the British department store chain founded by Polish-Jewish entrepreneurs and strongly associated with Judaism and Zionism, is not being boycotted – in fact, Marks & Spencer is taking part in the boycott, and refuses to buy goods from Israeli settlements.

There is also a strong democratic mandate for non-violent political activism not against Jews – which could never be justified – but against Israeli government behaviour.

Fifteen percent of Conservative voters, and more than 30 percent of both Labour and Liberal Democrat voters, sympathised with the Palestinians over Israelis when polled in 2014.

If they want to express their sympathy for the Palestinians by joining BDS and lobbying public bodies to divest, who is Cameron to stop them?

Radical group

BDS is a radical group with a radical ideology using radical means to achieve radical aims, but you don’t have to believe in all or any of its aims to feel uncomfortable about this new legislation.

Preventing public bodies from taking part in the BDS movement is denying voters the right to respond to pressure from their constituents to disinvest from a country that the British government has repeatedly stated is breaking international law, and which David Cameron has accused of maintaining an “open-air prison” (in Gaza).

Cameron was right when he identified that “Jewish conspiracy theories” act as a pull factor for potential extremists. It was Christian Europeans believing Jewish conspiracy theories that originally led to anti-Semitism becoming so prevalent – stretching from the foundation of the Roman Catholic Church to the propaganda of Adolf Hitler.

Now it is new Jewish conspiracy theories being legitimised by Cameron – a confirmation of a view held by some British Muslims with an interest in the Middle East – in other words those most ripe for radicalisation into the most perverse versions of Islamism, that Jewish interests control the British government. They don’t – and Cameron is acting largely under his own steam in an effort to protect both British Jews and Israel.

His motives are admirable, the information he is acting upon dubious, and his arguments specious. Criminalising political dissent is only going to reinforce perceptions of Jewish conspiracy theories which – by Cameron’s own admission – helps terrorists. So why do it?

Alastair Sloan is a London-based journalist. He focuses on injustice and human rights in the UK and international affairs, including human rights, the arms trade, censorship, political unrest and dictatorships.

The views expressed in this article are the author’s own and do not necessarily reflect Al Jazeera’s editorial policy.