Catholic Church and the Pope anti- Christ?

The Catholic Church are being painted as anti-Christ by the 7 day adventist Church. One of the main reason is that the Church changed the worship day from saturday to Sunday. This they say was changed in the 4th century at the orders of emperor Convstantijne in honour çof the sun god.

The Bible side of the story:
1) Christ resurection occured on a Sunday, Mark 16,1-7

2) Christ made two Solemn visite  to the apostle ,on  two Sundays Jn 20,19-26

3) Christ through the Holy Spirit inaugaurated His Church on a Sunday Acts 20,7

4) the early Christians meet on Sundays -rebaptised the Lordsès day-to worship God and communion     together Acts 20,7, 1 corinthians 16;2, Colosians2, 16-17, Revelation 1,10

Logical deduction from the above quotes is that Jesus inaugaurated the worship day of Sunday.

Those who critisis the Church for  folowing Christ may be  consciously or unconsciously playing  the game of the anti-Chryist?