Flocculencio
Donor
What would constitute the "early" church for you?
The Urgemeinde? Nobody knows. Big parts of it still had a distinctly Jewish identity and could only be meaningfully said to be anti-Jewish if you cann Martin Luther anti-christian (he, too, opposed the traditional religious authority). At the same time, the scriptural foundations of later antijudaism come from the environment of the Urgemeinde, even though nobody really knows who or what John mean with the "Jews".
The early episcopal churches? It varied. There are pointers that Christians used synagogues as late as the second century AD, and to the average outsider, the difference must have appearted small. At the same time we find the occasional rant that looks more at home with later luminaries in the Cyril of Alexandria mode.
The imperial church? It had a definite streak. Bishops oversaw the destruction of synagogues and lobbied for discriminatory legislation, and some highly respected theologians wrote stuff that Der Stürmer gratefully copied (they had better writing skills than the average Nazi hack and charged no fees). However, while an anti-Jewish theological position was universal (they had killed Jesus, the Gospels said so), it did not universally translate into active hostility. Some churchmen were on friendly terms with Jews (Yes, I know, "Some of my best friends...", but they weren't haters, just garden-variety biased). In the post-Roman world, things could vary enormously, from the studied silence of much of the Merovingian church to the vicious discrimination the Visigothic bishops and kings imposed.
With all of this we need to keep in mind that the church here means the decisionmakers and thinkers whose writings survive. The average churchgoer was most likely largely clueless, unless stirred into a temporary fervour by guys like St Shenute. Gregory of Tours records an incident in which Christians, good secular Christian folk accultured into their tradition, go to synagogue every Sabbath instead of church on Sunday because they like it better, and when challenged, say it makes no difference (or, depending on your reading of the text, don't know the difference, though I think that interpretation is suspect).
Quoted for truth