Two goals from the Dutch striker propelled the home side closer to automatic qualification into the knockout stage of the European competition in a match overshadowed of crowd violence from Young Boys supporters.
The Netherlands striker showcased Villa’s improved squad depth, but this 10th win in 12 games was tainted by away supporters ripping up stadium seating, hurling missiles at stewards and Villa players, and clashing with officers.
Since the start of the current season, no team has secured more European games at their own stadium (13 from 15) than the Villa squad. Emery appears likely to win this competition for a fifth time.
The Swiss fans had contributed to the initially positive atmosphere prior to the opening strike. Their coordinated clapping, drumming, pogoing and chanting lent the afternoon start a feeling of a continental occasion, yet what followed each of the early scores was inexcusable by all measures.
In scenes reminiscent of past incidents with their fans in the past two years, the Young Boys ultras responded to the first goal in the 27th minute by launching plastic cups at the celebrating Villa players, with the goalscorer suffering a cut to the head.
Young Boys had been penalized €28,250 by European football's governing body and instructed to pay City compensation for destroying seats and toilet blocks in their European top-tier match in a previous season. Additionally, they were fined about €18,000 last season for the deployment of flares in their heated European visit.
However, the situation got worse after the second goal moments before half-time. While the scorer smiled on doing a knee-slide in the general direction of the travelling fans, they responded by ripping out seats to throw in addition to further projectiles and liquid at the growing numbers of security personnel.
Fighting broke out with police even as Loris Benito, the Young Boys captain, went over to appeal for calm from his team’s supporters. At least two disruptors were removed by police. Play experienced a lengthy delay until the match resumed and the half be completed.
Away supporters confront police and stewards during a controversial opening period.
It had at least been a very satisfactory period in sporting terms for the hosts as they pursued a seventh successive victory at their ground. The forward, who made such an immediate impact when coming on as a half-time substitute last weekend, was chosen to play at centre-forward, one of seven changes to the team sheet.
How he made the most of his chance, sharp and speedy for the duration in play. Marvin Keller had been forced to save his superb long-range effort in the fourth minute, and two other players came close prior to Malen headed in a cross from midfield. The home side were so dominant that eight players were involved in the buildup.
The play for the next score was somewhat more direct but equally pleasing to watch. Morgan Rogers delivered an excellent through pass for Malen to collect effortlessly through the channel before he cut back inside his marker and smashed in his sixth goal of the campaign.
Perhaps the scorer should not have celebrated in the away fans' area, but the crowd violence was utterly unjustifiable as it was severe.
There was a subdued mood in the subsequent period as the Young Boys fans, almost to a man dressed in black, ceased their chants. Jadon Sancho had a attempt stopped, and a Villa player was correctly given offside when providing an assist for a simple finish.
But as Villa made substitutions on the hour mark, offering key individuals extra time before the derby with Wolves, the visiting fans resumed their noise. A taunting chant was the home crowd's retort.
As the visitors eventually put the ball in the Villa net, a forward sidefooting in a delivery, there was a protracted video review before the score was ruled out for an offside in the buildup. The assistant referee on that side had shuffled up his line towards halfway and away from the Young Boys supporters by the time the verdict was announced.
In stoppage time, however, a substitute did crack home a late reply, after a diagonal pass, and on this occasion video review upheld Young Boys their brief jubilation.
After all the context to the previous European fixture here, the team will travel to Switzerland next month anticipating a calm trip and the victory that should safeguard their passage into the last 16 of the tournament.
A tech enthusiast and writer passionate about emerging technologies and their impact on society.