"Malayan Communist Party"
Seeing that they have a common enemy, Dato’ Onn and Tun Tan Cheng Lock started the UMNO-MCA cooperation. Tun Tan Cheng Lock was actually came from the opposition, All Malaya Council of Joint Action (AMCJA) which included the Angkatan Pemuda Insaf (API) headed by Ahmad Boestamam and several other Malay parties. On 27th February 1949, a Chinese activist, Tun Tan Cheng Lock, who opposed the Malayan Federation Constitution, formed the MCA and was elected its president, with the support of Leong Yew Koh and T.H. Tan.
UMNO was an obstacle to the lefties groups who wanted to form a government along the lines of Indonesia. Meanwhile, MCA was seen by the Malayan Communist Party (MCP) as an obstacle to its ambition to form a communist state in Malaya. That’s why UMNO and MCA started to cooperate each other, whereby you can see it until today.
For God sake, in 1949, the MCP clearly demonstrated its opposition to MCA by throwing hand bombs into Perak MCA Hall, injuring Tun Tan Cheng Lock and several others.
Communist, please stop. Yes, thank you :)
Let Malaysia be peace forever.