A huge pink billboard objecting to the DUP's "conscience clause" Bill has been touring around Northern Ireland in an attempt to convince Paul Givan to drop his proposed legislation.
The van has been paid for by a crowdfunding campaign among people around the world, who believe the MLA is introducing an anti-gay law that will legalise discrimination.
Mr Givan Private Member's Bill was sparked by a case involving Ashers Bakery, whose Christian owners rejected an order for a cake iced with a message supporting same-sex marriage.
Ashers is facing a court battle over its decision to refuse to make the cake. The Equality Commission, which has taken the case against the business on behalf of the customer whose order was declined, has alleged the bakery's stance was in breach of equality legislation.
But Mr Givan said he believed this was wrong and wants the law to be "rebalanced".
Last month, 230,000 people signed a petition by gay rights campaign group All Out against his Bill.
Following this, 900 members crowdfunded the billboard van - paying for it to drive around Belfast and in Paul Givan's constituency, Lagan Valley.
It parked up outside Stormont, Titanic Belfast and St Anne's Cathedral, displaying the message “230,000 say no anti-gay law in Northern Ireland”.
All Out co-founder Andre Banks said: “The DUP’s anti-gay amendment would make it legal for businesses to refuse to serve lesbian, gay and bi people, just because of who they love. 230,000 All Out members signed our petition to make it clear that this just isn’t OK. Not in Northern Ireland - not anywhere.
“Hundreds of thousands of voices opposing the proposed anti-gay amendment were taken straight to politicians in Northern Ireland. More than 900 of us chipped in a small donation, so a giant billboard van with our message for equality could drive non-stop around Belfast and Paul Givan's constituency, to push him to drop his anti-gay plan.”